DH came on pretty strong when we first started dating. In fact, I recognized some of the red flags from my own rather obsessive past dating behavior. For some things (like expecting after two weeks that I should already want to marry him), I told him he was out of his mind to think I'd already know that about a guy I barely knew. For the most part, though, I didn't worry about it and didn't think he was being overly controlling (like the night I fell asleep rather early so DH, then-BF, called me something like 16 times in a 12-hour period -- normally, freaky behavior but I just found it amusing, fortunately for him). However, when he told me about some of his own past dating experiences, I could see why the women kinda freaked out and wanted nothing further to do with him (one woman he brought a big bouquet of roses every time he saw her, which even her mother who matched them up told him was way too much). For me, I think DH so desperately wanted these other dating experiences to work out that he did way too much (I've been the same way in other relationships). With each other, we didn't have to try so hard so the wacko behavior really didn't present itself. I think the only really wacko (to me) behavior that I finally put the brakes on was when DH wanted to parade me around to all of his family and friends, which was *a lot* of people and excessively social for extremely-introverted me. I started feeling like a show-pony and told DH I wasn't doing it anymore (so there are still individuals I haven't met who've wanted to meet me because I was meeting new people something like every week or two when I said I wasn't willing to do it anymore). Anyway, I digress.
I, too, think this guy is sending up some red flags, and I wouldn't be afraid to tell him to back off a bit on the marriage talk and let the relationship develop naturally, unless he wants to be the one to cause it to fail quickly. Again, I did that with DH and, we did, eventually, marry (not quickly either -- we were actually engaged for a few years after dating for 8-9 months; other couples met and married in the time we were engaged and I know one guy who met, married, had a kid and got divorced in the few years DH and I were engaged).