can friendship and flirting go together?

Both of you need to be in your limits... If the flirting is one sided, the other person might feel uncomfortable which could lead to drifting apart and probably spoil the friendship.

Here are 2 points to remember:

1. Know where to draw the line. 
2. Don't get excited by the things he/she says during the conversation as it's just a jolly conversation between 'FRIEND'