Love and happiness

So life was good and simple in high school and there was nothing to worry about but now I'm on my own and haven't foun my way but there is this guy that I have been with for a long time now and now I'm starting to rethink my life because I found someone else and I don't know what to think about it because this new man makes me so happy and makes me feel good inside and out and he is loving and caring and cares about me but there is a problem we can't be together because of certain rules I don't know what to do because we like each other but it complicates in every direction. I just wanna be happy and he makes me happy every single time i see him whether it's or 5 min or 5 hours. I just wish there was someone who understood who could tell me what to do because I am torn and just wanna be with the one my heart wants me to be with.