
Dear Sugar,
I have been in a "friends with benefits" relationship with this guy for a year now, but lately he's been acting differently and I think he may be sleeping with other women. I asked him about it and he said he has slept with other women but it hasn't been recent.
I don't believe him, because recently I've found evidence of other women being at his place (another woman's hair on the bathroom floor, another woman's business card on his living room floor, and a condom wrapper in the trashcan, which he claims was used by his cousin who came to visit him).

We all have an idea of what constitutes a healthy relationship, what it entails and who it's with. But why, then, do so many people knowingly get involved in unhealthy relationships? Before diving head-first into a new relationship, it's worth paying close attention to a few tips.