IMHO, I would request help from Lord Rosier. He is very powerful and an expert in love matters. He will deepen the love or attraction felt towards you. They guy will really be obsessed within a certain time if you do evoke Rosier in monthly basis. Try to repeat 3 times and then yearly basis again to enflame him. Rosier is very friendly and extremely kind.
In your case if you attack only to the girls around him, you will never be at ease, because always there will always be new ones. As long as there is fire there will always be fireflies around.
So we have to attack directly to the source.
In that respect, I strongly suggest that Duke Sallos and Duke Dantalion also, you will request to change his mind (so that he leaves that playboy life for any reason and see you as the main light and best part of his life)
He should also want to create a family, and raise a child. A beautiful child of his own blood and a happy family and with you always in his mind , this will be the perfect recipe for success.
You may also request help from Djinns for that purposes. He should love the idea of becoming your husband, raising a child with you. The idea of having a child is a powerful reason for guys to marry. ( in that case even he choose to divorce in the future, you will always be able claim his money, as that was your main reason to be with him)
So with that in mind, you can do two things, as your focus is mainly on money, if you think that he will never be keen on marrying you (indeed if you request help from these demons be sure that he will) but just as an insurance policy in case, try to socialize with him much as you can and meet his rich friends so in the future if our playboy in question may dump you for any reason, you may still land on a new and rich guy. A successful guy knows many nerds and much of them are very keen on family life. You won’t probably need such a thing but having a B plan would help to eae your concern and seeing others attracted to you is also an important thing.
Along that evoke Halathor also from KoF but for yourself so that you may remove the blockages between a wonderful future and you.
For the girls around her, better to use the freeze spell of Vovin. You may find in the below link that spell and what you should do , even it is low magick it is very effective and in your case, it is the best.
Also to to cement your position and make yourself irrestible do that below ritual
You will see its wonderful effects.