from the description i am not able to tell what the spots may be. your and your boyfriend's doctors are likely going to need to take a look to determine what's causing them.
i have 2 dark purple round circles the sizes of a pea. they're spaced apart like a fang bite of a spider. i have them on my butt near my vagina. they dont hurt burn itch. nothing. they look like dark purple moles but like fang bites of a spider. my boyfriend found the exact thing on the base of his shaft. neither of us have had this or didnt notice them. i noticed shaving my bikini area.