<human>: Summarize the given text in a few sentences.

I have been out of a 7 year relationship for almost a year, with the only guy I have ever slept with. It was a very painful break-up but I have managed to get through it. A few months ago, I briefly dated a guy that works for the same company as me for about a 2 weeks before I realized I wasn't really wanting to 'date' right now. I haven't been single since I was 18 and I'm really enjoying my freedom. We talked about it  and he said he wasn't looking for any kind of relationship anyway but I felt like I might get hurt so I ended things between us. 

However it was the first time I had fooled around with someone other than my ex. It was amazing. I'm painfully attracted to him and the sexual chemistry is amazing. We fooled around a few times even after we had 'dated'. 
He has since expressed an interest in getting together again. I don't know what to do. I want him but I'm afraid I won't be able to handle the casual nature of the relationship since I've only ever been in a serious one. My head is saying "you're going to get hurt" while my lady parts are screaming "ENJOY IT! YOU CAN DO WHATEVER YOU WANT NOW!". I guess my question is should I throw caution to the wind and risk getting hurt for something that will make me happy?
<bot>: Out of a long relationship, amazing sexual chemistry with guy, neither of us wants a relationship, possible to be FWB without getting hurt?