<human>: Give me the gist of the text in a nutshell

I've known my friend for about 4 years, during which time she has been in a long distance relationship. I've always kind of had a crush on her, but because of her long distance partner, I haven't done anything.

Recently she asked whether we could meet for a coffee date. The last time I spoke to her, she made reference to having difficulties with the relationship. Although I like her, I was paranoid about being used as a battering ram for relationship difficulties (one of my friendship groups literally imploded after this) any I checked her facebook page to confirm she was still in a relationship (she was) so I figured all was good. For whatever reason I reloaded that page 30 minutes later, and I saw that she had taken those details down. 

Again, I was thinking fairly cautiously - specifically, they could be on a break or maybe she didn't want information about her relationship up. I went and had a coffee, although unfortunately a mutual colleague of ours was there and in the same location, so we couldn't really ignore him and I didn't get a chance to ask.

I asked my brother about this situation (because her, him and I have a number of intermeshed friendships). He felt that there wasn't enough information to reach a solid conclusion on anything, so he felt that I should not do anything or at the very least approach the situation cautiously, in case things did go south.

Unfortunately, I'm not sure how to do this. I'm recovering from surgery this weekend, so I have a bit more time to think about the situation. I don't want to lose my friend, but at the same time the sequence of events (at least from my perspective) felt like something was up.
<bot>: Friend may or may not have expressed interest in me, have a number of intermeshed friendships, not sure how to approach this without messing things up.