How do you deal with "complicated" friendships?

[Shawn (In the Moment)]

Edgar and I have always had a complicated friendship...we both know there's always been some attraction there but I definitely know we're not meant to be together. We're just too different. How do you deal with friendships that are something more than that?

[Winston]

It's important to establish boundaries - otherwise things can get way too complicated and out of hand.

[Pete]

in my experience, a strong sexual chemistry with someone never goes away. you gotta be aware of it and have clear boundaries or drama happens: good for TV, bad for feelin good in your life.

[SADIO]

I currently have a complicated relationship with a guy I met quite some time ago. He really likes me, but he also likes women...and I always feel the need to be "first." so, I have been trying to push him away for months, but he still keeps coming back asking for my hand ...over and over. The last time, he really hurt me and I vowed never to deal with him again, BUT..........he called, I listened and I felt my heart beat again!!! Can somebody tell me why is that????