I don't wanna sound stupid but....

So me and my boyfriend have finally decided to start trying to have a baby and this whole week I'm ovulating but is there like a better way to say hey I'm ovulating we need to have sex tonight like he already knows that I'm ovulating this week and I feel like its just starting to become mechanical like oh we have to have sex so is there any tips or suggestions besides wearing slutty underwear or lighting candles to make sex less procedural