Questions: Girl's Behavior

It's like a LOT of them when a fboy goes up to them they ask if he's a fboy and when I swear I'm not, right away they usually tilt their head over, put on a cute face and I dunno what to do against that so I look right into it and by the count of maybe 2 I'm all uhhhh?😲😲😲with my act just sinking, I'm like uggh! Is that what you use too?

I was upset at something because I have trauma history and there’s a woman who is my best friend.
She was very sad when I was not texting her or when I didn’t see her right away as my friends know her and they told me she was sad.

When I showed up she said “I feel so happy now you are here”. Later on she told me “you need to improve your mood because I need you (my name). I can’t do it without you”

she has sent me wedding videos before and she has said things like “promise me you will never ignore me” and when I shared photos of things relating to love she was saying “I miss you all the time if only you knew”

This has not happened to me before. No woman has ever flat out said that they need me and has reacted so strongly in my absence. What is happening? I don’t want to ask her why she said that because it would be awkward

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Suppose there are two guys at your work place and both are of your age group , given both are almost similar in terms of looks/height etc..

But they behave differently as in:

A.) Guy A greets you/smiles initially in the day , takes every opportunity to make a conversation with you, be next to you , makes regular eye contact whenever necessary, talks other things as well apart from work.

B.) Guy B rarely tries to greet you /pass a smile by himself. If you greet him he simply replies back. Never tries to talk to you or have a conversation with you. Mostly tries to ignore you/ you presence and doesn't make any eye contact unless very necessary for work.

Few years ago I went on several dates with a girl who admitted to her friends (I was told later) that I was being used for food, rides, and gifts and she said that she'll dump me after the holiday season is over. I got to know about it after the breakup where she made up a reason and broke up.

Few years later (yesterday) I see this girl, she was voluptuous before, but now she's overweight and really lost her looks. I wanted to know if purely to satisfy my ego or vengeance can I make fun of her in public because since then I've worked on myself gotten a job, built a physique, etc.