Ex's

Its been a really hard time for me and I really don't know what to think of it but I really need to just write it down.

At a friends party I made out with my ex and then a week later he started dating someone else. I really don't know what i am pose to do I want to be mad but i really can't be cause i just want him to be happy. but then again I wanna be the one that make him happy there are so many things that i want but never got to do. I wanna be able to show him what love rele is. but i don't know what i should do and i don't know if i should tell him. things will just go horrible and i really don't know what else to do. PLEASE HELP ME

Thanks,
B