well....the situation was resolved. i finally brought it up to him and this is what we discovered. i really only know one way to go to get the job done on my part and he said that when were in the position it doesnt feel as good for him and that does notice that he starts to lose it in that position. so, instead we just switched it up a little bit and it was fine last night. but he said hes so concerned with making sure that im satisfied that he doesnt want to change positions if im liking it so i guess thats why he wasn't keeping an erection. so, long story short....the problem has now been fixed thanks for everyone's help.