Depends on the man, his upbringing. Some get silly! If painfull childhood has occurred, he might have to get away whenever he sees you. This could be solmething else of course.
It is more what you feel around some-one rather than whether you think they will look good on /with you. It's not hype though as that's more of an inability to see some-ones failings. I
t's not track record either. Though most hope to be the first -and last, and only if it is love.
If he lowers his voice etc. he may be simply trying to impress, though this may be solely to get another notch on the bed post.