seems silly but here goes it.

my boyfriend turned 16 last month and I turned 17 in December. (forget the age difference) but he was a virgin until about 5 months ago when I took his virginity. he only lasts for a few minutes. like literally 2 or 3. it doesn't bother me so much as almost all the times we have sex need to be quick anyway. well here's my question and don't make fun: as he gets older and more mature, will he begin to last longer? I don't mind the shortness now but as we get older I will hope he lasts longer. thoughts???