Hey guys, I've been having great almost mindblowing sex with a new fuckbuddy for about 2 weeks now, at least for me. The problem is he wants to take my rather large cock up his ass really bad but only seems to be able to take it for a couple of minutes at the most. I've had both guys and girls take a look at me and back out or attempt it once, but never again, but have never had anyone keep trying to take me but couldn't. His ass has always been lubed and feels slightly open to me when we start. We have been doing lots of making out getting really hot for each other before we even start the heavy forplay. I have been really working his hole with my tongue and lubed fingers getting it as open and relaxed as I possibly can, and he is always eager to take it, and I have gone as slowly into him as possible, but he never gets past the point of being able to take a few gentle strokes. We have tried every position we can think of, but still no luck. I've talked him into fucking me the last couple times, but he claims to be more of a bottom, and is unable to cum from topping. Any advice would be appreciated.