Is there point when a serial monogamist is really no different than friends with benefits?

Both end up with nothing serious in the end, just the wording ''boyfriend and girlfriend'' to make it sound better. They're just another temporary person that'll be ditched too.

If someone has a bunch of relationships (let's say 12 or more), even live with them and all ended up in break-ups, it sounds similar to friends with benefits and casual hook-ups. It's all base on the initial attraction and sex. But there the person is the type for something long-term.

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What's the point of having lots of relationships if all of them end up in break-ups. It sounds like they can't develop a deeper commitment; long-term. There is something wrong if it follows the same mistakes, same patterns of break-ups.
Is there point when a serial monogamist is really no different than friends with benefits?
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