Be honest with me, is this unrealistic?

Depends on the person.
Some are naturally keen on only one person; others will always be interested in variety and the new.
Most are somewhere in between.

Uncountable reasons for variation:
- no two humans are the same, many people have difficulty coping with difference;
- some traits are off-putting, we might or might not know what these traits are in ourselves;
- phase of partner hunting, "window shopping" versus ready to settle down;
- genetically endowed degree of oxytocin (ability to create long term bond & the impulse to defend that bond);
- fear of intimacy, commitment, entrapment, responsibility, or being used by the other;
- personal confidence in own attractiveness;
- user or player, seduces & fucks for own gratification, gives nothing, no care about STD's, pregnancies, feelings;
- sincerity of personal or moral values or lack thereof;
- intitial interest can fade, especially if first impressions proved not quite right.

I'm sure others could add many more to this list

It's not unrealistic. I suspect being fiercely loyal is part of the reason all my relationships failed and definitely the whole reason many of my friendships failed.

We are social people, we shift attention to the biggest threat and opportunity all the time, but we form alliances and bonds because we are stronger together. does that help ?

This is one of the biggest reasons I am not in a relationship. This is what I am. I am totally 100% loyal, committed, and interested in only ONE woman.
So what's the problem you may ask? The PROBLEM is that I expect the same from my lady. When SHE expects, wants, and receives 100% loyalty, it's because she "loves" me.
But if I expect the same as what I offer and give, it's because I am possessive, insecure, a narcissist, and a control freak. So I choose to do without the BS and not put up with the arguing, the hypocrisy, and the double standards. We live in an extremely self centered society. A relationship which you describe takes TWO, and two unselfish people getting together these days is rare...or yes, unrealistic.

And a sure fire eventual death to most relationships is "girls night out" or "guys night out". Nothing good can come of it.

It’s that whole “he’s not that into you” vibe. Don’t date people that aren’t head over heels for you. You may be dating out of your league a bit.

most people are into my looks but have strong opnions and a wierd sense of humor and they dont like it but hey girl power

The fact that they felt the need to tell you that tells you everything you need to know and you should move on. Never be a sideboard option.

It happens. It’s rare but it happens.