I didn't receive a Valentine's gift from my boyfriend. Is it unreasonable for me to feel upset about it?

"I (20F) just celebrated my first Valentine's Day in a relationship, and I have to say, I was really looking forward to it. Watching my friends enjoy it in the past had me eager for that special moment with someone. However, when Valentine’s Day came, my boyfriend (20M) simply texted me a casual 'Happy Valentine's Day,' explaining that only kids celebrate it and that we’re too mature for such things. I had gotten him a gift, but after hearing his response, I felt too embarrassed to give it to him. So, I played it off and agreed with him, saying it was just a kids' holiday. But truthfully, I expected a bit more. Has anyone else been in a similar situation? How did you deal with it? Was I out of line for having those expectations? EDIT: I just remembered something that's been on my mind. We recently had a small argument, and he mentioned that we’re not like other couples because we don’t talk on the phone very often. As a final-year student, I’m always swamped with assignments and seminars, yet I still find the time to text him regularly and call him 2-3 times a day. Hearing his comment made me reflect on our Valentine's Day experience. If we're different from other couples, then why skip the Valentine’s Day celebration?"