<human>: Can you provide a brief rundown of the text in within 3 sentences?

So a week ago I (m22) broke up with my gf of 1.5 years. I felt that our relationship had become stagnant again as I felt it would every few months. I would usually try to make things better, more spontaneous, romantic, etc. But this time I wasn't feeling the will to make things better after a few failed attempts. This is also partially due to the fact that I have never slept with another woman and would frequently fantasize about other women. 

But now I am regretting it. My gf was never bad to me, we rarely/barely fought, and we have a lot in common. I miss her a lot and still love her and she still loves me. We're meeting tomorrow to talk and im wondering if I should try to get us back together. Part of me really, really wants to, but part of me is worried it would only temporarily fix things, and that I might just hurt her all over again because part of me still wants to be with other women.

I feel like I gave up a girl I love and fit very well with, just for the hopes of sex and potentially a similar relationship with another woman. The thought of my gf moving on and being with other men hurts and terrifies me, but I feel so selfish. Any advice or thoughts are appreciated.
<bot>: Broke up with gf cause relationship felt stagnant, miss her a lot but also think about other women. Considering getting back together.