His Dick Went Soft?wtf

So I was giving my boyfriend a hand job amd he was semi hand but as I kept going he went soft in my hand. Wtf like why I'm so frustrated is he not that into me? We've been dating 4 months so far and we do fairly good for the most part. I'm his first girlfriend. We were laying in bed after and he was completely soft like aren't guys like at least semi hard being pressed up against you while naked? Advice please I'm dying frustrated