Guys, Why couldn’t he perform?

My boyfriend has been acting a bit cocky lately has been excluding me from family events, also didn’t invite me to watch the Super Bowl until I asked him if we were going to watch it together. Last night I wanted to have sex so I initiated, he started to arouse me, he got a bit hard but he was having trouble you know.. he didn’t perform & I’m just a bit confused about what just happened. I asked if he was okay, he kept saying yes, he doesn’t know what happened. We never have that problem but he has been acting a bit weird lately. Should I be concerned or is that normal?

Guys, Why couldn’t he perform?
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