I want an even split if we won the lottery
How would the money be split?
Even split of course, we had already agreed on this.
Sharing gains from a lottery is expected if both people contributed to getting the ticket. It is always good to discuss what will happen before purchasing the ticket. This will help to avoid arguments once the ticket is purchased.
Exactly.
If people share a ticket most people expect 50/50 but it hardly ever works out. I hope you get it in writing because the other person might want to keep all the money and take it to court then you both will lose.