Plugin for a mouseover to show post preview text?

I don’t know if that title made sense, but on my website https://www.howtobecomeamissionary.com I made a left sidebar to show just the recent post titles instead of the post title and preview.

What I would like is some way to make it where when you move your mouse over the title a caption box pops up with the post content (until the MORE tag).

Does that make sense. I tried implementing something like Overlib (https://www.bosrup.com/web/overlib/) But when I put the the_content() tag in the code it goes nuts on me.

Any ideas?? I even tried to do it in an alt tag but I have the same problem.

Thanks for the help,
Paul