You are no prude, but this fellow just doesn't make the grade. A man is not supposed to just bang you silly. He is there to comfort, support, love, and then bang you silly. Still, just because he can't make you happy in bed does not mean he can't make you happy another way.
But how to get him into your belly?

"Well, maybe ...Ops, I dropped my purse."

Obviously this is his chance to be a gentleman and pick it up for you, after which you will be properly "grateful", so of course he bends down to pick it up, exposing his head to your mouth.
You strike before he even reaches the floor, engulphing his head before he even realizes your intention. His hands reach to your shoulders to try and pull himself free, but you manage to grab one and shove it into your mouth as well. A gulp or 2 and it is down your throat. His other hand is still trying to shove you off him, but now you have 2 arms to deal with his one. It's a struggle, but soon his other hand is in your mouth and then it is also in your throat.
Your throat and mouth have to expand more to get his shoulders in, but that is no problem. You are soon licking his manly chest, and being diverted with thought of how nice that would have felt on top of your chest. Still, he is really tasty... But you are brought back to reality when you realize he has stopped moving down your throat despite your efforts.
You realize he has put his hands on the bottom of your stomach and locked his elbows. He's stuck in there and until you can shift him, he isn't going to get eaten. !@#$, you will have to be more careful next time you eat somebody hands first.
But what to do this time? Maybe he is ticklish?.. Tickle a rib, the belly... No luck. He doesn't move. Now what? Wait, That is surely ticklish...

Your grab at his tool works wonders. He is suddenly relaxed and your well timed swallow sends the rest of his chest into your mouth. He recovers, but only temporarily. A few carresses of his pole hardens it, but relaxes the rest of him. You keep stroking it as his belly enters you. Again, you find yourself wishing it could have been put to its proper use, but not enough to let him out.

You pause to get the tip of his best part in your mouth. Just in time. Suddenly your mouth is filled with his cum. If he is hoping this will make you choke, he is going to be badly disappointed. You get some frosting with your meal. Gulping it down, you also gulp down his tight hips.

You pause a bit to let your tongue work on his weapon. Up and down a few times and it is as hard as ever, then soft as it unloads another flood, which you happily handle.
This takes the last bit of fight out of him and he makes no problems as you swallow his legs. A moment later he is entirely in your huge belly.

You suppress an unladylike belch as you lazily rub your extended stomach. "Now you stay there."
"And you come with me."
"Huh?" you eloquently answer as 2 massive arms wrap around you, pinning your arms and leaving you helpless, a fact you realize after a few kicks and wiggles.

As you yield, the man continues "Now you can make me happy one way or another. You are lunch unless you spread.

"Wait. She's mine!" comes from your belly, but is met by "Tough luck buddy. You are in no shape to keep her."

This has certainly gone wrong. You are not the kind of girl who just gets it on with total strangers who don't even bother to introduce themselves before they rape you. But you are going to get digested if you try to refuse. Maybe you can play along long enough to turn the tables...