puzzled

It's difficult to say. I have no idea what you're saying.

"Have great chemistry" is pseudo science slang.

The "theory" is that just as two fluids can be combined in a chemistry lab or biological secretions can lure mating insects people can look at each other and there is a mystical chemistry of attraction between them.




You mean:

... but even though she had had great chemistry with other men, the relationships were too intense to last.

Small errors accumulate and blur the all over meaning.