This movies has a certain underlying Groundhog Day-ish feeling to it, but in this instance it's voluntarily made. It shows us a different kind of "self-made" time travel, with a main character being in a downward spiral into insanity who can only go back in time for 24 hours at a time of their choosing. That concept is actually pretty interesting but throughout only superficial, sadly. It misses some marks where it could have gotten a deeper meaning about love, time travel and stuff.
How (or why) the time travel is achieved is irrelevant, portrayed in the movie by using a tan bed and saying this is a time machine, in a nail salon, let's go.

At parts like those, it's silly, at others it's cute af, but always somewhat toxic.
Our main heroine, Sheila, is suicidal and decides one day to kill herself but gets a last few drinks in a bar.
There she meets her "true love" Gary, with whom she has the perfect date over and over again for a year until she gets weary of his personality and antics. In reality, she fixates on him, obsesses over him to make him the best version possible with the help of some time travel into his past, playing his uncle so he has a father figure in his live and such. After some time she starts to constantly tell him, she's suicidal, she's going to kill herself, this is the place she would do it and such. Driving him away each time but she never let's him go.
You could argue she distracts herself from her suicidal tendencies because she doesn't "really want to kill herself" but that is still a sign of her bad state of mental health. She never kills herself in this simply because the time travel isn't automatically done as in Groundhog Day, killing herself would mean she can't go back 24 hours to meet Gary again.

The issue with that, when we ignore time travel for a second, Sheila is emotionally abusive towards Gary. She uses her suicidal tendencies to guilt trip Gary into a relationship at the end and we, the audience, are supposed to think aww cute they get together after all due to love. But no, there's nothing healthy about this.

For Gary there's always this contrary feeling of loving her and wanting to throw her "in front of a train" as he said. But he can never leave without having to fear she's going to kill herself. The fact that he, at the end, let's her decide on her own does not negate this underlying issue and feeling he has in their relationship.
There's nothing cute about toxic, abusive relationships and movies should not romanticize them.
That's where this otherwise cute, "fluffy" movie takes a weird, dark turn and falls apart.

Cuoco/Davidson portray their characters good, though.
It's a so-so movie, with good and bad parts but an intriguing concept that is not fully explored.

At the point where the lady time traveller says she killed the other her from the existing time line, the movie changes for me. If I was on a date with her, the date would be over right there. That is also how I felt about this movie as a watcher.

This is a ROMANTIC COMEDY! It's called "Meet Cute." It's supposed to be light and fun and happy. The person you are supposed fall in love with in a romantic comedy doesn't tell you she just pointlessly killed someone and you ignore it and have a happy ending....

They made the wrong kind of movie!

Also, Pete Davidson is not attractive. He is not the type of man a woman goes to a bar and stares at all night because of his looks. Everything about this movie is wrong.

And it gets worse....

If for some CRAZY reason you decide to keep watching the movie past the common sense stopping point....you end up having to WITNESS the MURDER!

THAT JUST PISSED ME OFF! I was trying to be nice and watch the movie for a few moments more, BUT THAT HAD TO HAPPEN! Casual murder in a romantic comedy.

Yuck!

Really never thought I would rate these type of movies with seriously high scores (let along I watched it on the plane where I can’t hear s**t). But, I think I have just experienced the exact cheesy but so deeply emotionally authentic love as described by this sci-fi ish cliche plotline. But it really is possible, to find someone that you can talk anything to, and feel the magic and fall in love every (date) night regardless of how exciting, romantic, awkward, “boring”, or just strange a date could be, I actually resonated with this movie that I kept getting accepted and then slightly pushed away because how intensive the love chemicals can build up. It becomes addictive, and borderline unhealthy, and definitely can be scary for the other party. Luckily for me, I did not require a stupid time machine to relive this experience over and over again to experience the mutual love that both of us were looking for. (Yeah so this is really a review of my life, and the theme of the movie, nothing technical hahahahha). Thank you for confirming that I have found my true love.

'Meet Cute' is weak.

From the get-go, really, I didn't click with this one. I will say that Kaley Cuoco is decent, not that her performance is anything all that notable but she is the film's standout in my opinion. This is the first time I've seen her act in a meaty role, same goes for Pete Davidson actually - and he's meh, one or two moments but overall forgettable here.

To reach for positives, I note that New York City looks neat and the plot isn't as repetitive as I thought it was going to be whilst watching. The filmmakers mix it up enough, the problem is moreso that what is portrayed isn't all that captivating to watch - not helped by Cuoco and Davidson lacking true chemistry, which is of course a necessity for a romcom.

"Shiela" (Kaley Cuoco) has an unique gift. She can travel through time. Now only for a very limited amount of time, but enough to influence the lives of those close to her. She meets "Gary" (Pete Davidson) and what ensues for the next ninety minutes is a messy drama that demonstrates how they fall for each other and how she tries to use her powers to make his/their life better. Of course it doesn't all go to plan, there are lots of pitfalls and boy are we made to suffer them all too! The story does have an interesting premiss - what might we do to help our loved ones deal with - or avoid - trauma, but neither actor here really manages to draw the audience into this really lacklustre and extremely verbal series of shallow scenarios that end, well - you do not need to use any more imagination that the writers did to arrive at that. It is frequently quite cringe-making, and in the end I really couldn't have cared less whether they did or didn't get run over by Santa's rogue sleigh. Very mediocre Christmas television fayre, this - and instantly forgettable.