<human>: Can you provide a brief rundown of the text in within 3 sentences?

We dated in high school and early in college, but we ended our relationship when I left the country for 2 years (on an LDS mission in Paraguay)

When I returned, we didn't date again, but were still close. The best way to put it is that she relied on me emotionally. 

Then, she herself left the country for 18 months (also an LDS mission. To Italy) and we carried on our odd friendship-relationship during that time.

Two weeks ago, she got home from her mission. And just today she told me that she can't ever see herself having romantic feelings for me. I don't really understand why and am left reeling.
<bot>: I've been in love with my best friend for 7 years, and she just told me she'll never feel the same way towards me.