When does it go from roommates to more?

My ex and I decided to move in together after we dated two months on and off. Our first agreement was we wouldn't have over the opposite sex in our apartment. We started off with each sleeping in our own rooms. We would have sex every few weeks, we didn't go out trying to meet anyone else. But the past few months I started sleeping in his room, we spend all of our time together... We're each others best friend. We have nicknames for each other, we tell each other we love each other and major holidays we spend them with both of our parents. We agree we are exclusive to each other. The thing is he says we aren't dating! He's been hurt bad twice in relationships is he just afraid to admit what we have??

Before you get involved anyfurther please try to understand if your friend can survive happily without you. If the answer is no, all is good for you but if its yes...its time for you to seriously think about the repercussions of this relationship incase your friend moves ahead in life...The question needs to put forth him indirectly so that he gives you an honest answer, also ask your heart the same question in all probability you will get the answer.

It's just hard but right now he's going through a lot. He has a 6 year old son that he's trying to spend time with and then a 18 month daughter that the mom isn't letting him see! His son and I are very close and get along really good. I guess he has a lot on his plate right now and he told me where he is right now he's very happy and content. He says he's not ready for a relationship (but for me the way we are it seems like we are). He's not had many serious relationships and the two most recent ones they both cheated on him. He's had more one night stands. His mom and I really get along and she said that in the past he's just jumped into relationships and got hurt bad, she said because of that hews very cautious especially now with his son in his life. But your right if I go by his actions I can tell he does love me.