2 guys and very confused

I have my first boyfriend and I really like him and he makes me happy. He's falling for me really hard and fast. I just lost my virginity to him and we had sex a few other times, but it never felt right... it didn't feel good at all (it was meh). 
Recently a friend of mine that I have feelings for and I hooked up with (before I was in a relationship) asked me to visit, and i did. At first we were just talking and watching tv. Then he kept inching closer to me and started cuddling with me. We had a tickle fight, and then he kissed me. I didn't push him away. I kissed him back. He eventually started fingering me. Again, I didn't stop him. Everything with him feels so great, we are the best of friends and have great chemistry. I don't know what to do. I didn't get in a relationship with him then because he was still hung up on his ex, but he just told me that he is now over it. Do i see where things are going between us? How do I figure out my feelings for both guys? I'm so used to being single and I just started doing things with guys. I don't know how to be in a relationship. Help me please?