Why did my boyfriend reject me for sex?

We were cuddling in bed and watching tv. I am a bit sick but on antibiotics. We started sexually touching each other and I asked him should we have sex? He looks at the clock and tried to say it was late. I feel like sex has been less and less lately. But why would a guy rub on you sexual than say no. for sex? Like why pre heat the oven but never bake cookies? Any advice is appreciated.

Why did my boyfriend reject me for sex?
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