guys does this ever happen to you during sex and if so why?

i was a virgin until my current boyfriend and weve been having sex about 2 weeks. Every time he ejaculates quite quickly- within about 5 minutes. The other day we had sex for about an hour and he didnt ejaculate at all :( The other thing is i couldnt feel him in me. I could a little bit, but i couldnt feel him on my walls and I dont know what its supposed to feel like? He is not small by any means, he is average sized. I do kegel excercises, and i asked him if there was a problem and he said no.

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