You seemed so sensisble when I first spoke to you on GC lol . .
Where is your intellegent detachment?
You are talking like a love sick puppy. You can be a love sick puppy and still have your brain connected.
The most important thing is to balance your personal security with your love affair.
If he is willing to stay until May then its perfect. You can finish out your semester and then go spend the summer with him in Mexico.
Where is the problem? It allows you to hedge your bet. If things are wonderful you can think about not coming baclk next Fall.
If you want to marry after th summer . . well its up to you. But I would rcomend making damn sure you don't have any kids until you settle in for a few years.
Look, even Valkyrie is urging caution and she is competent and confident example of the female species.
Also, be detached enough to realize that being in a socially isolated situtation and in a hateful job like you are is likely to color your prceptions of him leaving and create a sense of urgency as well as feelings of being trapped that may not really exist.
Good luck
PS. In the end, even if it doesn't work out its not amajor deal unless you have kids. So be a several years into it before you start having them.