How to end a friends with benefits relationship?
There's this guy who I've known literally my whole life (our parents have been best friends since high school). Though not very close, we were always friends (he's a few years older) but we just recently began getting intimate in our relationship this February when I moved. Though I wanted to be in a relationship, he didn't so our relationship was never categorized but I just thought of us as friends with benefits because of the way we interact (he had told me he wasn't ready for a relationship). However, I find myself getting very emotionally attatched (though we didn't kiss and things like that until earlier this year I had liked him for about a year or so before). Also, to make matters worse, I moved so now we will be going to the same high school. I wouldn't be able to stand seeing him flirting with somene else (I'm not sure if he would but I wouldn't want to take any chances and look stupid) and I think its time that I get into an actual committed relationship since it is what I want. Sometimes I feel like we act like a real couple but then I see him online firting with other girls and I know it isn't true.
How can I end this fwb-type relationship and still remain friends in the end? How should I start the conversation?
ALSO, should I tell him in person or by text?
What's Your Opinion?