I'm in a weird kind of platonic relationship with someone but giving up on it.
Don't you think it's worth keeping the relationship going?
It is but we have a lot of arguments.
If the relationship is valuable to you then you shouldn't just give up on it. Don't be lazy, put some work into maintaining the relationship.
I don't feel like it is going to work out in the end. I think it is best to give up on it.
I'm sorry you are feeling this way. It's rude to just give up on things without going through with them. It is hard to predict exactly what might happen if you don't try.