Stray thoughts

Q: When I say Allah or make dua, some images comes to mind. I deny it by saying that "it is not Allah and it can't be Allah at all because Allah is Wahid and Ahad" Can you suggest any solution in the light of Qur'an hadith. Also give me reference.

Investments

Q: I had given money to a builder for investment purpose in his project he will invest money in his projects and distribute profit among investor on percentage wise. Is it permissible to invest like this?

Speaking to a non-mahram man

Q: I have a question. Basically I used to talk to my far relative and we had the thought of getting married but by the will of Allah that didn't happen, but before that we was friends for 10 years. He'd give me Islamic knowledge and everything, but then I met someone else and he seen messages from that guy, nothing bad or anything. But I was so scared he'd leave me I said wallahi I won't talk to him anymore, but the things is he was someone who bought me close to Allah, all the knowledge about Islam I knew was due to him. I feel like I'm losing my way and I need I talk to him. I feel that I picked a kasam but the person who I picked it for I'm in a haram relationship with him anyways so why should I stop talking to someone who gave me so much knowledge because of the fear of losing him? Can you please help me and tell me what I should do.