im 16 ive been seeing /been with my 17 3/4 yr. old bf now for 8 months never argue ive known him4 ever..he has been active with a couple of girls in the past.ive only been with 1 other guy sextually in the past .. we recently started to engage in sex im on the pill were using condoms but sometimes it feel like its messing up the relationship what should i say 2 make him stop 4 a while,that wont sound like i want to break up??i do want 2 stay with him