I'm not a virgin anymore-Have I lost my chances for being "marriage material?"

I've been browsing the forums for a while and made an account because I like how people tend to think here. Anyway:

I've always wanted to stay a virgin until marriage. Up until last month I had maybe 6 or 7 long term relationships and no sex...until I met this guy I thought was perfect.

He was a gentleman, but at the same time, he kept me on my toes. He paid for our meals (when I didn't cook for him), bought me things he wanted to see me wear, he wasn't afraid to take charge and choose what we were doing for our dates. He was even okay with waiting until marriage, or so I thought.

He told me he loved me after two months, and after four, he started talking about marriage (I didn't even bring it up!!). He told me he knew I was the one he wanted to spend his life with. He took me to a jewlery store and showed me the ring he wanted to get me (very expensive) but said he didn't have enough money yet. By that point I was way too elated to think straight, and so we went to his place, had dinner, made out, and had sex. And it was the best thing ever, so of course I wanted to have it again, and again. I wasn't thinking clearly because of all the oxytocin, and I know it was stupid, but I slept with him several times a week for about a month...Then I realized he hadn't actually proposed yet, and felt fishy. So I asked him about it, and he said the same thing about waiting until he had enough money for the ring. 

Finally after a week I said "Look, I know I've been hypocritical about my beliefs, but from here on out I need a real show of commitment before we have sex again. I don't care about the ring and we can just go to the courthouse if you want." (I know all of this was so dumb of me!) 

So, you know what he did, right then? He broke up with me! I was dumbfounded at first, but I guess it kind of makes sense now. Still...four months and a bunch of money, just for sex with one girl? Isn't that kind of crazy? 

Sorry this is so long. My actual point is, I really value(d) the concept of virginity and only being that intimate with someone who is really special to me. But I kind of totally messed that part up. So I know it's not right for me to expect no sex until marriage, since another guy got the milk for free, but what's a reasonable time to wait, then, or a standard to have, before sex? I don't want to end up with a bunch of partners, but I don't want to be unreasonable to guys either. What should I do?!