sex with bondage toys

So my boyfriend has only slept with one other girl and has never experienced this. I told him I was really into it and it came as shock to him? We tried it last night and.. he kept finishing so fast! He handcuffed my hands behind my back and bent me over and before I knew it 2 mins into even getting it in he finished! the second round he used the paddle and he was going at it and as soon as he took a wack at my ass with it he finish!? and it again it was like 3-5 mins! Normally he last soooo much longer!