<human>: My ex and I broke up back in May, after over a month I have sex with a guy who I became close to then I stopped with because it wasn't what I wanted. My ex was very upset over this and I regretted it. 

I know that he has kissed other people but unsure of anything else. We've always been in contact and still remain friends. Recently on a night out we decided to meet up which led to coming back to mine and having sex. Soon after he left and went back to his.

We haven't spoken about it but, now I want him more than I ever have. Not because he's not mine but because I'm still crazy over him and he seems much happier than before. 

I tried texting him yesterday but there were hours between texts and stopped without saying anything. I don't want to get back into a relationship with him immediately but I'm hoping we can slowly get back to way things were. I just don't know how to go about it or is it too risky?

Can you summarize the given text in a few sentences?
<bot>: Had sex with my ex recently, still in love with him don't know how he feels, what should I do?