1) The first one had two women that showed up at a guys door during a thunderstorm. They ended up in (I think) a hot tub. The next morning they act like crazy women (I remember a breakfast scene) and then the guy throws them out. They end up trying to get back in the guys life and somebody (I think) dies.
That sounds like Death Game (1977: a.k.a. The Seducers) which starred Sondra Locke and Colleen Camp.