I'd say it's Venus in the first, conjunct the ascendant (from what I can make out.) Venus-ascendant people tend to attract others, whether they are physically good-looking or not.
Also, I've seen several charts with Venus-Mars-Jupiter contacts where the person was engaged in polyamory (multiple partners) as a lifestyle, so even if this isn't your lifestyle, you may give off this vibration to people who are polyamorous, or hope to be. The one exception I can think of, when I put this to a woman once, is she got miffed at me and said, "No, of course not!" But it turned out that her husband cheated on her.
A "rule" of modern astrology is that we either manifest what is in our horoscopes, or we suppress them, in which case we attract to us people who manifest the negative qualities of our difficult placements. The reason is because the chart must express itself in some fashion.
I'm not saying you should engage with or otherwise hook up with multiple partners! Rather, I would think about alternative constructive meanings of those planets in your grand cross. (Venus, Mars, Jupiter, Saturn, moon.) The other "rule" of modern astrology is that you can manifest the negative attributes of our planetary placements, or you can work on alternative positive manifestations.
I cannot say the stalkers will vanish, but working on positive manifestations of your grand square planets should help some.