YOU SAID:

i feel like crying when he sees me and acts like i'm a stranger

INTO JAPANESE

彼が私を見て、私が見知らぬ人のように振る舞うとき、私は泣きたい気がします

BACK INTO ENGLISH

I feel like crying when he looks at me and I act like a stranger

INTO JAPANESE

彼が私を見ると泣きそうになり、見知らぬ人のように振る舞います

BACK INTO ENGLISH

When he sees me, he almost cries and behaves like a stranger

INTO JAPANESE

彼が私を見ると、彼はほとんど泣き、見知らぬ人のように振る舞います

BACK INTO ENGLISH

When he sees me, he almost cries and behaves like a stranger