<human>: Can you give me a shortened version of the text?

Ok, to start off yes age of consent where I am is 16 and I realize this is ok legality wise.

backstory: I met this girl when I was in highschool I was a senior and she was a freshmen. We became friends and she had a HUGE crush on me, I let her down by telling her I was actually dating someone else... she took it rough but things were ok in the end, we stayed friends and she's been in multiple other relationships so I don't think emotions are the same issue they were in the past.

more recent: I'm just wondering if this is morally right. AoC is 16 here so legally it's ok, but I don't know if morally it's different. If we wind up deciding to be FWB I will talk to her about it before hand and make sure no emotions are involved and it's strictly platonic. Another thing I've taken into consideration is her maturity level, as far as I can tell so far we both can handle this like adults and not flip out about anything unless it's medically an issue. Again that being said I'm going to talk to her about that and make sure we're on the same page. 

I'm just not entirely sure what my options here are and I'm a little nervous something will go wrong to effect something down the line.
<bot>: A friend of mine wants to be friends with benefits, and I'm ok with that but I'm not too sure the moral side of me is ok with that.