At your age - I think your libido is normal....I know I was extra horny and easily ready for sex again....Still to this day I still the same way but know I have to control those urges and not act on them all the time....I totally agree with what most has said here in this posts....Not going to beat you down about the condom thing but dude - you are not invinceable and I know guys your age that have caught things that penacillin can't cure (not cool)....Definitely invest in some magnums or any of the other numerous brands made for the well endowed guy....And I have seen some condoms that would definitely be loose on a super large guy so don't let that be the excuse....Because I know I have a high libido - I make sure I strap on a condom at all times because just scared of catching anything....Good luck and be safe....