Does this sound accurate or sketchy?

My boyfriend and I have 2 children together and I feel like something is weird about his tax return. He got a new job in Feb 2021. He started working roughly 55 hours a week and started bringing home $600 checks, sometimes even more. He also got a 401K. The only time he’s really missed is 3 weeks of the whole year - 1 week for paternity leave and 2 weeks because we got covid.

But he claims his tax return in total is only $300 all together. He told me it was lower because there’s new tax laws, but when I was using his phone the other day, a family member texted him about being in a higher tax bracket but he deleted the conversation. I am paranoid because he has a history of lying and I’m worried he’s lying so he can use the money for irresponsible activity. So his family member telling him something different than what he told me and him deleting the convo makes me sketched out.

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