when i was younger, mum opened lingerie shop, and my aunt has music school... after school, i was pushed to make myself useful and go watch the shop or help around the school... so i surrounded myself with girls without any feeling towards them..... yes i can open bra with one hand, in case you are wondering, because thats part of the job when showing girls some bras...

I think first thing first, you gotta surround yourself with girls that you are not interested with... those big sisters or aunties at work can be a good starter if u dont know how to talk to girls... pay attention to how you are when you talk to these aunties, take notes, and try to apply it with the pretty girls you like... little by little... hope this helps