If a guy tells me to cover up my bra strap...?

A guy friend and I were chatting on webcam. I was wearing a loose shirt so it slipped over my shoulder and exposed my bra strap. I didn't notice nor really care. My guy friend pointed out that my bra strap is showing (for my sake). I gave him a 'really?' look. He just laughed and said its to avoid temptation.

Admittedly I might have a thing for him...but the fact that he told me to cover up (as opposed to leaving it exposed) strongly suggests no sexual attraction from his side, right?
If a guy tells me to cover up my bra strap...?
Post Opinion