Suppressing my inner feelings

So, I am a 20 year old guy that grew up in a very conservative southern state. Nearly everyone at my school growing up were seriously homophobic, and I have always hid my sexuality well. I have known that I am gay for as long as I can remember but have never acted upon it or seeked any sort of relationship until now.I have recently decided to come out of the closet to my family and co-workers. I really don't have many friends, as I am an extreme introvert, some of which I attribute to hiding who I truly am. Everyone that I have come out to is extremely supportive of me, yet in the two relationships that I have tried to develop they go nowhere.The first, lasted a few weeks. We met on a dating website and really had some good common interests. We started hanging out and watching movies together and going out for lunch/dinner sometimes. I had an internal struggle every time we hung out. I really wanted to hold hands, kiss, cuddle, whatever. Something physical, not even nessesarily sex, but I just felt like I was holding myself back every time. I talked to him about it, and we did start holding hands etc. but that was about it. Not long after that he stopped communicating with me.I let a few months go by and now have been talking for a few weeks with a new guy that I really like, and he really seems to like me. We talk every day on skype and play video games together and have met a few times but I feel like the same thing is happening again. I really do not know how to express what I want, and I feel like no relationship is going anywhere, and I feel like it is because I have internalized a fear of being open. I have grown so used to hiding my feelings and desires, that I cannot force myself to act upon them no matter how much my brain is screaming at me.I guess I am just asking for some advice. Have any of you went through a simliar experience? How were you able to overcome it?