AITAH for not telling my boyfriend my dad had COVID?

My(19f) boyfriend(21) is very close to my parents, especially my dad. His dad and my dad have been best friends since they were in school. When he came out as bisexual four years ago, his dad kicked him out and he came to live with us for a month. My dad was the one who finally talked sense into his dad.

They also have a lot in common. Both prefer fish over pork and chicken, both like running in the afternoon and both think Poirot is better than Holmes, an opinion they know better than to express around my mom.

Anyways, my boyfriend was at university in another city when my dad got COVID. My bf video called me and noticed I was eating a hamburger. He immediately asked what’s wrong. Guy knows I only eat fast food when I’m stressed about something. Normally I eat healthy.

I lied to him and told him it’s just university application stressing me out. I didn’t want him to worry since his exams were right around the corner.

He eventually found out when he came back. Didn’t get angry but he did seem disappointed I lied. Mom, who advised me to tell him over the phone when he called, said I should have been honest and that trust is the most important thing in a relationship.