@Christmaspug
Nice bit of excitement for u , life a bit dull is it at mo ...yeah it gets like that sometimes,he’s someone else’s man...walk away and leave their marriage in one piece,you can’t be that desperate for a friend..she is suspicious of you ,and with good reasons clearly.
THIS. ^
@Shalom20
Oh dear, I think everyone sees where this is going. You will certainly cause problems in their marriage if things like this start to happen. For the sake of peace and being respectful, its best to cool off this friendship.
Also this. ^
@DahliaDell it's blatantly bloody obvious you fancy this man, and want him. You're bored with your husband, bored with your marriage, and bored with your life, and you're looking for fun and excitement. You are desperate for an affair with this male 'friend.'
You don't give a rat's ass about his wife, and she dislikes you for a bloody good reason. When a 'wife' dislikes a female 'friend' of her husband's, there is always a good reason for it.
Women/wives aren't fucking stupid, and they are mostly quite happy for their DH/partner to have female friends. GENUINE friends. But not the type of female 'friend' like the OP.
I have met a few of this type, and they are toxic and sly and manipulative, and they LOVE the drama they create. They also LOVE to crow about how 'insecure' and 'jealous' their male friend's wife is, of the 'friendship' she and her 'male friend' have. 
Back off FFS DahliaDell, sort out your marriage, sort out your life, and leave this man and his wife alone! Have some respect and consideration, and think about someone else other than yourself. You sound toxic.