I have a doubt. help

I am a 27-year-old man who has never had sex. To be honest, I did not put much effort into finding a partner as I was focused on my major and family. I do not consider myself a bad looking man. Recently, I started dating a girl, and we have been getting closer. Today, when she pressed her thighs against me (we were both wearing pants), I ejaculated, which has not happened before. Could this be a sign of premature ejaculation?