As mentioned earlier, he is Venus and his 5th of children is also ruled by Venus, who is in his house. So he identifies very closely with his sense of responsibility towards his children. Venus is in his house, the 7th, confirming this.
The ruler of his 2nd house is mercury, and being retrograde we know his finances are not as good as they should be. Venus and mercury close towards each other. Venus is in the sign of mercury. All his money is going towards the children.
Venus, as scham wrote, will not perfect an aspect with mars, but will square Neptune, on his 10th. This is also your 4th of endings, so he wasn't really happy to end things with you, but felt he had to.
His 4th of endings is mercury, who is retrograde.
Once mercury turns direct, there could be a change of mind here, probably because mercury ties in with his income, and once it goes direct some of the financial burden could be lifted.
So who do you represent? You are mars, in the 4th of endings, in egotistical independent Aries. Located exactly on the ascendent, you are thinking about you. You are in stubborn, fixated scorpio, thinking of the bed pleasures you'll be missing.... scorpio is sex, and it also rules your 12th house. You didn't enter the south moon's node, it falls in your second house. The 2nd house represents your money and self esteem, so this is what you risk in a relationship with him.
Moon is void of course, so no action will be taken here by anyone.
However, mars is in the 4th of endings, and home, and is conjunct Part of Fortune, so this ending is a positive thing for you. Mars will also conjunct Chiron, the wounded healer, this means you will learn some important things from this contact, although it will be painful for you. For example, you will review the aggressive martian energy, and the selfish thoughts that are the Aries energy.
This man sounds admirable, he is very focused on helping his children, and working two jobs must be exhausting for him. You don't mention if they live alone or if he has help, for example his mother or a helper. How is he coping?
Have you asked him if you can help him somehow, maybe watch the kids or take them out so he can relax, or do shopping for him, and so on? Show that you care, that you are a friend?
Moon on ascendent is also on his 7th of partners. Emotional support. Void, so nothing is forthcoming.
The horary is valid for the present. But nothing is fixed in stone. Things could change and they could become more favourable, as his situation changes.
Can you prepare for that in the meantime?
If he seems so perfect, are you willing to invest time in him?
Scorpio is a very strong sign so you must have a strong character, one that runs deep. And is capable of sacrifice, if you really believe in the end goal.
You can help change the picture here, by being loving, showing your love in a selfless way.
Without expecting something in return. Just doing kind deeds, and it might get you what you hope for. If at the end, it doesn't, you will at least have done good deeds and become richer inside yourself for having done it.