<human>: Can you summarize the given text in a few sentences?

I don't really feel the need to define this relationship, but I want to know whether it may look weird to others and what they could think about it. I'm F22 and my friend, let's call him Dan, is M21.

Dan lives far from me, but we chat everyday and tell each other everything. I used to be in love with him, but now I am not anymore. However he's still the most important person in my life, and if I had to describe our relationship I'd say I feel like I'm a mix between an older sister and a friend. When I'm with him I get all touchy-feely and I use cheesy words. 

With others I'm not sweet at all and I may come off as cold or distant. I don't like to be touched and I avoid kissing on the cheek or hugging friends. 

Next month Dan is coming to my city for a week and I plan to introduce him to my group of friends. Among them there also is the guy I actually like, let's call him Robert (M25).  Things are kind of strange between me and Robert, I think he may like me too but nobody has made a move yet. I don't want my friends and Robert to get the wrong idea but at the same time I don't want to be distant with Dan, especially because I don't get to see him very often. Do you think if I introduce him as my best friend, others will still misunderstand my relationship with him? What do you suggest me?
<bot>: I'm cold with everyone but touchy-feely with my best friend, what can I do not to let others misunderstand?