Why I keep doing that?

So there’s a thing , when i was in school i had a boyfriend whom i liked a lot ! But some things were confusing for him and me , like whenever we were sitting together he would try to hold my hand but i hesitated and pulled back on the other hand i loved small gestures like touching his hand playfully, touching his hair, shoulder etc. but when he initiated grabbing me and touching me it all became weird otherwise i liked small touchy nudges a lot!
Why is it like i become weird when he tries to touch me but i myself touch him playfully?
Why I keep doing that?
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