My girlfriend texts a guy who she says is her best guy friend multiple times a week. This guy was her friend before we started dating but they have only been friends for about a year and a half (he is not some childhood friend of hers). We have been together for 8 months. I'm wondering if I should put up with this texting? It is not on a constant daily basis but it is approximately 3 times a week. Is this acceptable in a relationship? What are the guidlines for what is and what is not okay for texting other guys (other than the fact that it is not okay to be flirty)?