kleenex friendship

Litterally means:
A friend that calls you and chase you until he gets whatever he needs, and then BYE!

One of those friend of you that is an incredible dude, cheerful and happy, great company, maybe even successful. Only real problem with him is that you feel used after having seen him and stayed with him because you realise he only used that valuable time spent together.

A:I feel terribly bad I didn't call you on the last week mate!
B: no worries dude, I know this is a kleenex friendship.