My boyfriend [M20] and I [F19] had a disagreement, and his parents witnessed me in tears.

To put it briefly, my boyfriend and I had a pretty intense argument in his bedroom (he still lives with his parents and siblings), and he was yelling loudly enough for everyone in the house to hear, especially since the rooms are so close together. I repeatedly asked him to stop yelling out of respect for both me and his family, as I believe it's disrespectful to argue in someone else's home. He didn’t listen and eventually told me to leave. However, I had to pass through the kitchen where his dad was to exit the house. I was really upset as I walked down, trying to hold back tears after the argument, but his dad noticed I was leaving and asked why I was in such a hurry. I ended up breaking down a bit, my voice shaky as I told him I wasn't sure if I was leaving. He asked about the situation between my boyfriend and me, and all I could say was that we had an argument and I needed some space to cool off. He mentioned he would talk to my boyfriend, so I assume he caught some of the commotion. I feel really embarrassed about this; I didn’t want his family to know about our issues, especially after they saw me crying. My boyfriend also said he heard my conversation with his dad and called me a snitch, which leaves me feeling a bit confused about the whole situation.