Taubah and Repentance

Will a person's repentance be accepted if he stops talking to another Muslim?

Q: If a person is not talking to another Muslim then their repentence is not accepted. If this is true and a Muslim isn't speaking to another because he insulted him or a loved one and hence isn't talking, and repents to Allah for his past sins, his repentence and sins won't be forgiven by Allah because he isn't speaking to a Muslim?

If that is the case then how can one get their sins forgiven. Everyone has atleast someone they don't speak to because of something they said or did.

What if the Muslim he isn't talking to lives far away and he repents to Allah for  sins, will his repentence not be valid?

Is it true that Allah won't accept someone's repentence because they aren't speaking to another Muslim?

Repenting from illicit relationships

Q: I had love affairs and also fulfilled sexual desires with the girls I had affairs with. But then I got married and have 2 kids. Now I think that if I do it or go for non means, I will be punished in the form of my children doing it. So please give me a solution to the problem. If I marry someone, my parents and my wife's parents will be against me.

Making taubah

Q:

1. How does one repent? Does one have to repent through dua for it to be accepted? Or can one just be talking in a room alone, as if they are talking to Allah?

2. Does one have to be in pure clothes or state for repentence to be accepted?

3. Is it true that Allah doesn't accept forgivenss from someone who isn't talking to another muslim? Does this mean their repentence will not or is not accepted nor will their good deeds? What if the Muslim they aren't speaking to is rude, swears or drinks alcohol and sells cigarettes. What if the person has ego and degraded the other person. Insha Allah they will eventually try to speak to them in the future when they get the opportunity when the time is right.