no rude answers please it's just my boyfriend was embarrassed before we had sex?

Do some guys get embarrassed cause they can't get hard? I didn't see like it was a big issue but he was eating me out and I was already in the mood then he stopped he was like "I'm sorry babe it's just I'm embarrassed you turn me on a lot but I can't get hard" so he wanted to see some porn on my phone for a little bit which I was like okay whatever and then he got in the mood and I kept asking him why are you embarrassed he was like getting mad he's all because I just am you turn me on a lot I don't want you to think I'm weird or anything. No rude comments just wanna ask if some of you no why It's been a while since we had sex because before he will always get hard without watching porn it wasn't a problem thanks ladies