I would say give him your favorate flower so every time he looks at it he thinks of you and he would know you will always be there for him and vise versa. Plus he would know what to get you for every and any holiday.
He can look, but not touch.
Yes it is acceptable. It is not required and they may try to refuse if but most flower delivery people are not expecting a tip and will be excited about your generosity.
Yes, it is perfectly acceptable.
You seem to be asking for an opinion so I'll give mine: No! I don't believe that is an appropriate way to be treated by a boyfriend at all.
With adolescents 2 or even 3 years may be acceptable. As you get older this difference can, and often does, become greater
Bees that collect a flower's honey give to that flower pollen deposits from another flower.
Yes, it is sweet to give your boyfriend a valentine.
Discuss the issue with a trusted adult -- perhaps the school nurse or a counselor. They can give you ideas, and if the aggression is outside acceptable boundaries they can assist you in taking further measures.
I don't recommend it unless he's really into agriculture and this would be some sort of particularly appropriate flower arrangement. Overall, this is a no. Flowers are for girls, but chocolates are for everyone.
Poetry is an acceptable gift to give your girlfriend. You can give her a poetry book or you can write a poem just for her and put it in a nice frame for her to hang up.
your boyfriend kisses your neck.
Sure, why not! He is your boyfriend.