Humans are 'social animals' and therefore we have certain needs we want to be met. While chasing opportunities to meet some of our needs, we develop some strategies. This situation gets funnier when that certain need is getting laid, approaching our mates and taking things to the next level in a suitable and appropriate environment.
Here are some things that people usually do thinking "What if I get laid?" and see if 'a friend' of yours exhibits the same behavior. :)