well hung

My BF is well hung to say the least... sometimes I can't go long enough for him to finish because it hurts even with lube. I feel horrible when it happens. Guilty... so guilty because I get off several times and even with tons of lube sometimes I can't last as long as he needs. Tell me it's not just me... he's the first man I've been with over 6" and he's at least 10" if not more. How do women deal with larger than normal men?