请帮忙翻译这个句子，用英语．

happiness 是名词，所以不能那样说。最好是：
I feel so happy to be with you!
或I am feeling so happy to stay with you!

I feel so happy ，just because of you！
不能 feel 后面不能加 happiness ，happiness是个名词哦把它该成happy 就ok

I'm happy to be with you

I feel so happy with you by my side.

I am happy when you are with me!
I am happy when you by my side!

i feel so glad to be with you

glad i am with you