Maybe he should have waited to talk to her about this?

"Yeah?" He smiles, feeling a little out of breath. "I mean.. I kinda thought so but since apparently it's been-" He sucks in a breath and wills himself to stop stuttering. "I was kinda worried you uh.. might have.. you know.. uh.. had another boyfriend-I mean not that I wouldn't be supportive but-um... you know..."