Questions: Girl's Behavior

A couple of days back when this cute co-worker of mine and I went to the store together, she called me love and started asking if I had any special needs (she clarified that the reason why she asked me the question was because we had a conversation slightly beforehand about her baby's tracheostomy issue; I answered her with the truth (as any real friend should), but while I didn't directly say I was autistic, I told her I was diagnosed with the disorder at age 3.

I've called her pet names like goddess, beautiful, babe, etc. But I didn't jump into the extremes. While she has continuously called me "love", I have refrained from calling her something more lusty, such as "sexy" or "shawty". She's certainly not single; she mentioned something about a husband of hers while in the car and called someone daddy. A day later, I found her falling in love with a fellow male co-worker (who is ALSO married with kids). They both are married (not to each other) with at least one kid of each of their own.

Personally, that pissed me off. But I acted okay with it, I didn't go snitching around like a bitch. She's in her high 20s, the dude is in his 30s, I'm only in my low 20s. I saw the dude and her behind closed doors in the main office; I didn't know WTF they were doing, but it seemed kinda sus to me. She called him handsome the day later and was flirtacious, sarcastic, etc etc. She was rarely like that to me. RARELY.

She said today that "we're gonna need to talk" (while we were at the lunch table with the same co-worker) and when he left, she asked me about work boundaries. She, in an indirect manner, told me that I must call her by her real name, and not babe or sweethart or whatever. But what's the point of that advice when she literally called me love? She even said something worse, saying there "might have been a miscommunication" when she gave me her number and that the number is for "work only." Well, she didn't apply this very same standard to the other co-worker!

Thoughts? (Be honest)