What I can tell you is that if your spouse is male, you can be fairly assured that your spouse will cheat on you. The main question is really just “how far will he go?” I say this because it is in the male nature itself (represented by Mars) to adventure and explore, etc.

Every man has a “cheating tendency” (therefore, since it is norm, maybe “cheating” is an unfairly harsh term?). What you can hope and strive for, should you require a male partner (which most women seem to need, unfortunately for them), is to keep him reigned in so that he manages his masculinity in a way that it does not violate and disrespect what your femininity deserves (his fidelity).

It is not easy to do this. My suggestion is to expose a male partner to a lot of Jupiter and Venus symbolism simultaneously.

For Jupiter symbolism, try to steer him away from typical male fascinations like high scores in games and sports, watching people fight and compete, trying to increase his strength, etc. Try to steer him towards higher male ambitions like establishing laws and being a decent representation of those laws and ethics. So try to expose him to respectable “gurus” in various fields – sources of good ideas on morality, ethics, law, philosophy – so that he might develop a passion for what they are saying, rather than the typical passion for pumping iron, punching bags, and revving engines.

For Venus symbolism, expose him to art. It is essential that you try to be his curator. Unless you are the goddess Śrī, which I suspect you may not be, you shouldn’t expect yourself to be able to be all the Venus that this man (any man) needs. But you can realistically strive to be the curator or avenue to all the Venus he wants. Here I have characterized Venus as “Art.” Art is not limited to paintings. Art means music, dance, theater, etc. etc. – everything and anything that is beautiful and therefore brings pleasure is “art.” Try to expose him to quality artistic experiences, and try to be in the role of the instrumental person responsible for showing him a good new restaurant, great new musician, etc. etc.

When Men (Mars) are influenced enough by these things (Jupiter and Venus – together, not separately) they tend to be reliable, and can function usefully as protector and supporters of women and children.

If YOU are the Man…

In the less common case where a male asks this question, the answer is quite different. It is, “probably not… unless you mess things up.” Unless a woman has an unusual composition, or has gone through or witnessed significant relational trauma, her instinct is TOWARDS fidelity. (Unfortunately the former condition is becoming more common as history progresses). 

“Messing things up” means not giving a woman what she wants. The good news is that what she wants will probably be good for you too, because she probably considers herself to be a unit with you.

The essence of what she wants is “resources.”

Besides that practical requirement, she also is a flower who wants “water.”

So, if you give her resources that inspire her creativity and confidence in you, and if you pay the type of attention to her that she desires (the “type” is very important – the type of attention SHE wants), then it is very unlikely that you will have a disloyal woman.