Given the following context:

About to nervously jump off a bridge, scrawny Harry Berlin is a barely functional human being. Just as he attempts to leap off the bridge, he is distracted by Milt Manville, an old friend from fifteen years ago. Harry doesn't really recognize him at first but there appears to be a contrast between the two of them with Milt boasting of how well he is doing in life while Harry tries to listen.
Milt takes Harry to his house to meet Ellen Manville (Elaine May), Milt's long-suffering wife. She is complaining that their sex life is non-existent but Milt has a secret lover in the form of beautiful blonde Linda. Milt convinces a barely-there Harry to make a go of things with Ellen so that she is not left lonely when he will divorce her for Linda. It takes a while but Harry and Ellen eventually fall in love. They marry and go to Niagara Falls for their honeymoon but this is when Ellen realizes that Harry is the world's worst roommate and childish at heart. In one example, Harry unexpectedly stomps on Ellen's toe in order to test her love for him.  As she hobbles in pain, she asks, "What did you do that for?," and in response, he asks her if she still loves him, and she says she does.
As Milt and Linda start to settle down as a couple, she quickly realizes that he has an addiction to selling household items and junk for a quick buck, something that she is strongly against. She immediately dumps him, which leads to Milt to want Ellen back when he realizes how much he loves her for real. She admits that she doesn't really love Harry as much as she thought, as his bizarre day-to-day activities get to her. Milt and Ellen plot to get back together and convince Harry to divorce her but he loves her and sets out to prove it by getting a job as an elevator operator in a shopping mall.

answer the following question:

Who does Linda dump? 

Milt