Based on the situation of this couple, regardless of them being split soon after the winning, I think the best thing to do here is to cut the prize into half so that tensions between the two parties will de-escalate and avoid any confrontation or emotional turmoil and stress that sometimes end up so badly on both of them.
that's easier said than done because human nature is greedy and it is normal for them to be blinded by money and fight over it. if they think that each of them has full rights to the prize, then the best way to resolve this issue is to take the matter to court and let the court determine who is most entitled to the winnings. that's the only way to determine who has the most rights.
That is exactly what it is going to happen, because right now the one that has the full rights to that prize money is the girlfriend, and even if I agree that morally half of the prize is his, since it was his idea to buy the tickets and he had the intention to pay for it but his bank app failed, when it comes to the law I do not think he has a leg to stand on, since legally she has the right to get all of the prize money and if she does not want to share it that is her choice, so I think he will lose the lawsuit.
People do really changed in a snap on the time that we do speak about huge money specially if we do speak about millions on which it isnt really that shocking that these kind of actions could really happen.
People do changed up instantly and doesnt matter about their relation into other people. Basing up into the situation then that guy wont really be having the rights considering that the funds been used owned by the girl then she does have the full rights in regarding on this one even if this case would be bring up into the legal aspect. The only sad thing on here is that why both come up on splitting up?
Due to greed and this is why they do really end up on having those arguments on whose the full rights with those amounts. 50.50 should be fine i guess but it seems that they dont
really like to have some split up with those money. lol