Me and my boyfriend are students. I have a good student job, while my boyfriend has a large amount of savings. The last system here would just amount to him giving me his savings.

Our system is that we have a shared account, and we keep track of how much money we have both put into that account. I've put in about half what he has put in, because he spent a lot of money when we bought all of the furniture etc. for our rented apartment, when we moved in. So then I just put in a bit more than him each month, until we reach the same level.