Thoughts ?

So I was at Walmart and there was two teenage looking kids buying a pregnancy test in front of my boyfriend and I in the line to pay. So they paid and went off, I didn’t know where they went but eventually the girl ended up in the restroom taking her pregnancy test. I also went in to pee so I saw her come out after me when I was washing my hands.

She looked kind of lost or confused so I KINDLY asked if she needed help. Not to be nosey but because she looked really young. She didn’t seem uncomfortable or shocked that I asked her if she needed help. She kindly said no I’m okay and smiled and left. I washed my hands etc and left too. As my boyfriend and I are walking out of Walmart the boyfriend of the girl walks up to us and starts telling my boyfriend to tell me to mind my own business and starts kind of going off on us. He then proceeds to threaten my boyfriend. My boyfriend is just extremely confused but I just tell him forget about it.

I tell the angry boyfriend I’m sorry for trying to be friendly and we just walk off both confused. Was I wrong in asking her if she needed help ? I didn’t mean to make her uncomfortable or anything. Makes me not want to try and be nice to people. Just shocked me that they reacted that way.