Karen, your chart is familiar, were you asking about your marriage recently? Have things taken such a negative turn that you are asking about a 3rd marriage?
In your natal chart you have north node on the 7th cusp, which would indicate that your marriage(s) are actually a source of strength for you, although it may not seem that way at the moment with Saturn and Pluto transiting in your 7th, putting extreme pressure on the relationship.
But these two heavy planets are there to help you learn the lessons of stability, responsibility, and correct use of personal power in your relationships, and if you concentrate on this, you will be in a much richer spiritual place once they pass. At the same time they are beating up on your libra Uranus/moon/mars, so clearly you are in an important period of challenges and growth, which reflect on any relationship you have.
Your libra moon, and the whole libra stellium, needs to be in a partnership, although it's bubbling over with static. And it isn't easy for you to transmit this to the outer world, through your homey, domestic-minded and sensitive cancer ascendent. While I'm looking at a shy, emotional woman I may not be prepared when your emotive moon sends sparks my way! That's why you need a colder, more removed Capricorn partner who can more easily weather that unexpected explosive quality. The cancer and libra qualities don't blend, they alternate.
The moon is between Uranus and mars, which gives you some fairly volatile emotions, and makes you rebellious, and short tempered.
The sun in scorpio, a strong passionate sign, is un-aspected. It's natural sign of Leo is intercepted in the 2nd, so by sign and by house it is not "touching ground". This 2nd house is also your sense of self-worth, so you tend to have a low self esteem, and difficulty expressing your inner core, your ego. Which is maybe why your heavily loaded moon takes over and you depend on your emotions to carry you through.
It's understandable that someone on the receiving end of all this energy might have difficulty handling it.
Luckily the libra stellium is in positive aspect with your gemini Saturn so you have it within you to harness this power, by digging into your subconscious and reigning it in a bit, probably by talking it through. Saturn also governs your marriage(s), so this is also your key to making your marriage work.
Saturn, marriage house ruler, is in gemini, a double sign, so it does show more than one marriage, but it doesn't show a final number. Are you by chance married to a gemini, or a man with gemini moon or ascendent? Or a Capricorn, Aquarius with gemini? This type of man would be able to give you the stability you require, along with the communicative skills and airy disposition that balance your libra energies.
I don't recall, did you post a chart of your current husband? That might also give more insight into the probability of your marriage surviving the current Saturn/pluto crisis.
Not sure if this reply is what you were seeking when you asked, but it's all tied in together and you have to consider the entire picture and not just random threads.
There is a lot more that can be said, for example your Venus/pluto and mercury/neptune conjunctions that are really intriguing, but for the moment I've given you a lot to mull over. Let me know if it touches an inner point of recognition.
Good luck to you, and remember a marriage is different from living together, it has a karmic
purpose and has to be carefully considered when entering and when leaving.