英语大侠来I know some of my classmates are going to help their mo

I knew some of my classmates were going to help their mothers with the housework,others were going to buy some flowers for their mothers.I wanted to say to her that I loved her very much.

I (knew) some of my classmates (were) going to help their mothers with the housework, others (were) going to buy some flowers for their mothers. I (wanted) to say to her that I (love) her very much.
注：最后一句i love her very much表明一种事实，我认为不应该改成与主句动词一致的过去时态。