Whether you chose to go the over dinner proposal route or go all out and book a trip to Paris and propose in the city famous for love, you can't go wrong!
The most important thing is that you do it! If she's been there since the couch money digging sessions since college, then now is the time to make it official. You know she's not going anywhere, so you need to show her your not either! Put that ring on it!
A few other proposal ideas: