"I don't wear it often" (says about condoms)

Although he only ever gets blowjobs, so 'technically' he's safe.... but still not good practice.

It's more likely for the girl blowing to get it through oral sex

Sorry dude, that wasn't my intention. I was just commenting on the fact that the giver is sometimes more at risk that the receiver (unless the giver has already been infected orally with shit like warts, syphallis, gonorrhea, etc), and that's a very shady sometimes. So yes, always, ALWAYS use a condom or dental dam.