Our weekend'd plan

This afternoon, my boyfriend asked me if I was allergic to pollen. I wondered if he planned to send me flowers. on This weekends where (the way you wrote this sounds like you do it every weekend) we decided to invite our best friends to eat a big dinner and celebrate our love, which is a tradition in our school, although that I think it's is ridiculous. Love is two people's thing (correct, but "a thing between two people" is better) and I want to keep a low profile (this is usually used by someone who is in trouble, "keep private" is better). But looking on the other side on the other hand, I'm glad to share my happiness with my friends.

Very good! You need to be a little more specific and double-check phrases (idioms) before you use them.