Learn English – “will attract” vs. “will be attracted”

Yes, you can view it as a passive form of the sentence You interest me. However, the proper passive form of this sentence is I'm interested by you.

On the other hand, you can say that interested is an adjective and that interested in sb. is an adjective (deverbal) phrase.

So yes, you can view it as a sentence in passive voice, but if you wish, you can view it as a descriptive sentence that says: I'm a person with a specific property: interest in you. Since the proposition has changed and since the "passive" form is more common than the "active" form of this statement, I would be inclined to the latter explanation.

What you are referring to is the difference between an Active Voice and a Passive Voice. Here's the basic difference in grammar.

1. The women outnumber the men. - This is an Active Voice
2. The men are outnumbered by the women. - This is a Passive Voice

Your second sentence is just the passive for the following sentence:

• The men outnumber the women.