<human>: My girlfriend of 20 months broke up with me yesterday and at first I was feeling fine, but after thinking about it all day today I feel guilty because I know I wasn't being the "romantic" boyfriend she was looking for (I think), which I should have and could have been to reciprocate how she was to me.

She gave me a "We're both too busy with school and other things" reason, but I think it was because of my lack of "romanticism" and that's been in my head all day and can't get past it.

Basically, I want to know if it would be appropriate to offer an apology or just wait it out until I eventually get over it. The thing is, I have mixed feelings about whether I'm looking to get her back or just as closure for myself.

Could you distill the essence of the text into 1-3 sentences?
<bot>: GF broke up with me, was fine, not anymore, feel I need to apologize for not being a "good" BF. How should I deal with this?