<human>: Can you give me the gist of the text in a nutshell?

My girlfriend and I have been dating for about 10 months. We are both 21 and in college, so not even thinking about anything serious(moving in, marriage, etc.). More recently I  have had a building desire to sleep with other women, purely sexual no desire for another relationship whatsoever. 

However, I truly do enjoy time with my girlfriend and she is great with my daughter (from a previous relationship), so I am hesitant to give up on the relationship. 

I do not believe she would engage in an open relationship, but would it be worth it to ask her and then decide to end it then? 

All comments welcome, I know it is a selfish post, so don't be afraid to say so, I can take it.
<bot>: Truly care for GF, won't cheat, but not happy with monogamy at this point in my life. What to do?