Hi, willachilles! RagingLive here to review one of your parodies!
I've heard a lot about you in the short time you've been here, but I haven't really met you. I have, however, read other parodies that you've written and I must say that I am a fan! It can be hard enough to write a new song or lyrical poem without having to conform to someone else's time signature and rhythmical beat. You seemed to pull this off effortlessly! Great job!!

'Trouble' is one of my favorite Taylor Swift songs, so I will try my best to give a good review, based on what I know about the actual song.

I guess I didn't care, and I guess I just lol'ed

I feel that you have just one too many syllables in this line. Trying to sing it through aloud, I came up with 'just' as being the problem child. However, if you did want to keep 'just' I would suggest you take out 'and.' Because of the presets of the actual song, it's going to be hard for both of these to fit at once.

But when I tried the same, time wasn't on my side

Coming off of the before mentioned phrase, edited or not, this doesn't make much sense at all. If you're talking of 'doing the same' then I believe you need to change other sentence to talking about the other person, or else your readers might just be confused during this verse.

It takes me to a place I hope have rarely been

Again, this isn't making too much sense to me, and I wonder if you meant to say "It takes me to a place I hope [b]I've[/I] rarely been"
If I'm just missing something, please take time to set me straight on it.

I 'PgUp' and that is when I see
The 'NewPM' button, with a star next to thee

I know that it's difficult to find something to rhyme here, and I've been wracking my brain trying to figure out some solution so that I don't end up sounding like I'm tearing your parody apart. I do want you to know, though, that 'thee' would be used when you're talking to someone. Here, when you used 'thee' you switched from talking to the other person in the song to talking to the 'NewPM' button. Do you get that at all? Again, I don't want to sound like a meanie, but I just don't have any ideas of how to come up with a rhyming solution.

That maybe my message is too harsh, for him, or anyone, or anything, yeah

In Taylor's original song, this line is 16 syllables, in your parody you have 19 - not counting the 'yeah.' It isn't a huge deal, but it is confusing to someone who knows the song. I usually try to stay within a one to two count difference in my syllable sequence of a poem, so here I would suggest you say something like:
"My message is to harsh, for him, or anyone, or anything, yeah"
Or rearrange it however you want, but my advice would be to take off at least two syllables for ease of understanding.

I really liked your parody and found it very creative! If I was too harsh myself on any of the points above, or you just have a question, please message me in the comments below!!
I hope I get to see more of your work in the future!

Until then, keep writing and keep on smiling!!
~RagingLive