Solo a terceros Lyrics

Lyric discussion by vinyinnyincy 

Cover art for Solo a terceros lyrics by Panda

Can anyone who speaks colloquial spanish give me a good translation of Solo A Terceros? Just the title, I mean. I understand it means "only in thirds" but how does that relate to the song or what he is saying? Explicamelo por favor! Puedes alguien que habla espanol bien darme un traducion de el titulo "Solo a terceros" in inglés?

it basically means only to a third party so since this song is about cheating that what he means. that she gives pleasure but to third parties. i hope that makes sense. bye

Thank you much!