Mister Benoit said:
"The way to a womans heart is through her stomach"
Actually it's more upwards through the duodenum. It depends on how you want to get there and the position she's in.
If she's a sleep, then your best bet is a powerful thrust downwards over the heart. You'll experience a lot of resistance, but if you've lined it up right, you should be able to slide between the ribs and then you just have the cartilage to get through. It's a lot of work to get through that, but if you're trying to murder a woman in her sleep by stabbing her through the heart, then that's the way to go.
What you really want to do though, is get the carotid artery on both sides, the heart is too well protected to be a good place to go.
OT: Cooking is a good thing. I can't think of a single reason why being able to cook would be a bad thing for a guy to be able to do.
I can cook perfectly well, so it's not necessarily a requirement, but if a potential suitor could, it certainly wouldn't lose him any points.