I guess we've all had our "back-up" lover in case something happens to our current one. How selfish...Sometimes we fool around with them, sometimes we give them false hopes or we're on the receiving end of all these. One side is begging for a relationship while the other side is definitely looking for a short term thing. Suffice it to say, women experience this more often. Here, I give you 23 lame excuses us guys use to avoid a relationship.