<human>: I've been friends with this girl for about 6 years and we became really close friends over that duration. A few years ago, I confessed my feelings for her and it was reciprocated.

After the rejection, we remained friends and have been since. Recently we've been arguing over some pretty shitty things she's been doing & about her ex who is a huge prick. Since she started working full time we haven't spoken much, I haven't seen her in just under a month & I've found that I feel a lot happier without being around her constantly, as I don't have to deal with any shit from her about how shitty her ex is then running back to him & I guess she's just not been on my mind at all in the last 3 or 4 weeks, until she called me today wanting me to come see her at her new place someday next week. Now I can't stop thinking about everything all over again and it's shitty. How or even should I, tell her I don't think it's a good idea if we see each other anymore?

Can you condense the text into three sentences or less?
<bot>: friend for 6 years, we remained friends after she rejected me a few years ago but now I seem to be happier with not seeing her & need to tell her