Well, I suggest you tell your girlfriend that sometimes you just want to hear her voice, Maybe you and she can make a compromise about texting verus calling.

As far as the other guy, I think the two of you need to decide whether you are off or on. This being in limbo can definitely create negative feelings. If you decide it's not going to work out, then stop getting in touch. As you say, your relationship is causing problems with your friend.

Why are you trying not to meet new people, especially since you have lost some other friends?