<human>: My ex-girlfriend(naming her L) met in the beginning of our freshman year of high school and we were just friends to start out with. Half way through of freshman year she tells me she likes me and we start dating again. Things were great but it was a relationship. We just messed around sexually and never really got for into it. We break up and 5 years pass.

We meet again in our freshman year of college together. We haven't really talked a lot since the break up and decided we can just be friends. We start getting closer and closer as friends when all of the sudden, we both start seeing someone and was caught up with it. My girlfriend at the time broke up with me and L was there for me. 

A month or so passes from my break up and L starts getting really close to me as in emotionally and notices that I'm a different guy than I was in High School and tells me she really likes me but shes seeing this guy shes been with for 5 months and doesn't wanna end it. Shes not extremely happy with her current relationship with him. We were talking the other day and she texted me this: 

"I have so much chemistry with you. Like being around you. Sometimes i think i'd like to be with you but other times..idk it just makes me sick to my stomach." 

I just told her its nerves about liking me and dropped the subject as we went to bed. 

What do you guys think about this? I personally feel like we should try to date but i don't wanna be a dick and make her and her current bf break up.

Summarize the given text in a few sentences.
<bot>: My ex girlfriend told me she likes and that we have chemistry together but she feels sick to her stomach about it sometimes. What should i do about it?