Fwb now wants relationship iin?

It was a dark and stormy night.... we had been friends for years and we both just ended long term relationships.

One night I said, 'Maybe we could be more than just friends', so we talked about a FWB arrangment.

A couple of nights later, we decided to try it, so we drank some wine, ended up having sex and decided to become FWB.

This arrangement worked for about 9 months, as the sex for both of us was a huge improvement on our previous relationships. (e.g. I'm an oral sex fanatic and loved licking her pussy until she orgasmed but her previous partner was not into oral. Compared to my last GF she was adventurous in bed and my previous partner was repressed sexually, like a wet blanket thrown on a kitten).

After about 3 months of regular sex, I was surprised that I started to have real feelings for her and I let her know. She wasnt happy about that and she said, "Don't get attached or you wont get any sex."

Me: "Oh... OK".

I had to really switch off my feelings for her and just focus on the friendship and the good sex.

Some months later, she met a girl she was really into so our FWB arrangement ended.

About a year later, she broke up with the girl and one day asked if I was interested in a 'real' relationship with her, the whole 9 yards: a home, marriage and children. I just laughed at her and didn't even answer her.

Is it Normal for her to now ask me for a 'real' relationship after she rejected me during our FWB arrangement?