a) the "deflowering" of a male virgin was (to some extent is) a ritual of passage rather then the "ruination" of a maiden. (The old double standard that is always being ranted about)
b) rather then ruining his reputation the seduction of a youth/lad/young man would enhance his reputation.
c) There ARE songs I've seen about men being unable to "perform" - and *those* I would suspect are the equivilant to the "ruined maiden" songs.