Is my boyfriend sus?

So my boyfriend came home from the gym and said the girl we live next to works next to the gym. He said I quote “you’re not gonna wanna hear this and that she was taking the trash out and that there was a bin at her work but she went out of her way to take the trash to the gym bin and walk next to him very closely” he said “she’s weird” I don’t know what to make of all this cause I questioned him and said how do you know she works next to the gym and how long would you have to be standing there to watch her take the trash out and for her to walk past you like lol I don't know is he lying and flirting back with her lmk?

Is my boyfriend sus?
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