I often think of this too..... and I must admit.... Sometimes I just think its someone to talk to. My friend and I talk often... but my partner and I have different work schedules... i work days and he works nights. We when are together it is great... but we are more apart than not. I sometimes think that is whats going on..... my friend is filling the void of closure and comfort.... and that doesnt mean its flirting or anything... he just makes me feel good when we converse.