Advice on relationship with an adoptee adult

Hi all, My situation is a bit different that most people, I am jsut coming out of "a madly in love" (for both of us) relationship with a young adult who was adopted at birth, i have read few of the posts in this forum maybe find something similar but nothing... See he has been adopted by a loving and caring family, small town, has a large close circle of good friends, has a younger adopted sister...anyway as he said the perfect family he could of end up with considering. But 2 years before he finished Uni, his birth parents came into his life, via the adopting agency of course. The news had been really hard on him as, and this is where its uncommon, his birth parents stayed together!! they were 19 when he was born and for whatever reasons stayed together ... Needless to say it must have been hard on him, he said it "f** with his brain" back then...its been i think 3 years now...the last draw was that they had 2 small children, now 5 and 2. So as you can see 3 full blood brother ans sister and now he sees them bout one time a month. he has got close to the kids of course, he never asked them questions bout why they gave him up or why they got in touch with him....i personaly think thats probably regarding his new brothers and sisters and their future but i dont know. The thing is he and i got really close, madly in love as i say, although we had our problem, only one really and reason why we broke up, its that i am 11 years older than him..hes 24. As far as i know he has dated but never really had a "girlfriend" i was the first person he really commited and let in. he was the most mature person i went out with and we sure tried not to fal for each other but it happened! and he ask, surprisingly to me for his age, if i wanted ot get married one day and have kis cos no point in getting into something if we didnt want the same thing....i sure do, with him that is but not now so i thought timing could be fine but obviously things changed. In his mind he wanted to be in a relationship and be "IT" not to break up ever, well nice thought but nothing can be sure for ever but then a bomb dropped last october and i think thats added to his doubts in the future and kids...his birth parents annonced him they were expecting again!!! So he had another little brother recently...his birth mother is now 42 i think and i think maybe there a connection between him pulling away from me, and age difference cos of the irsk of pregancy late etc... I have heard so much about adoptee adult having problem being in loving relationships but im not sure why, or what trigger the pulling away... heard once from an adoptee girl that everytime she would get into a serious relationship she would mess things up. I know he loves me, and misses me, last time we chatted (yahoo messenger) he said he hated the situation, his lack of clarity, his confusion...his head says one thing and his heart says another...guess he followed his head obviously as he broke up. He always complain about how he hates his mind and thinking way too much bout things. I always said lets just be happy and enjoy day by day and see what happens, but in his mind what would be the point in in 4 years from now when i "have" to have kids and hes not ready...we would have to break up and we would have wasted both our time and in his mind it would be the end for me to have a chance to have a kid. nice thought but i mentioned that theres always a way, adopting is one and because of his situation in my mind i thought he would be all good with this...well he never really said if he was. Anyway, broke up now 3 months few contacts since ( miss you so much etc..love you so much )....I decided to let him go, give him no contact and hope it helps but i would like to get opinions or thoughts from adoptes adult who maybe went through a similar situation if not your view or experience in relationships. I hate the fact that i have to let him go cos i dont want to, i dont want to abandon him cos i truly love him. Thank you for reading that far!