Marrying a shia

Q: I am a sunni girl Alhamdulillah. Fortunately or unfortunately I like a shiaa boy. For a long time I was unaware about the major differences between shiaa sunni. Now when I have come to know I am confused ....very confused. We both have already committed to each other about getting married. Now Sir ... I want your help. Can you please tell me is it not halal for a sunni to marry a shiaa? And what is the reason if it is haraam? After all Shiaa's do also believe in Allah and read the same kalima. Awaiting your answer.

Saying to one's wife "I give you one"

Q: I am married and I had a argument with my wife. Whilst arguing one thing I said to her whilst in anger was “I will give you divorce” My intention
was that I would consider a talaaq not give a talaaq. We carried on arguing and I kept telling her to be quiet and speak to me slowly. She did not and this made me very angry and in that situation I said "I give you I give you one" realising that what I was about to say could break our marriage I stopped short of saying anything else. I did not mention the Talaaq  word when I said “I give you” as I realised what it would mean I had given divorce. It was not my intention to give talaaq, my intention was to stop the argument. I have been told that I have used kinayah words and because I had realised what it would mean if I had said the Talaq word and I stopped short of saying the actual word and I did not have intention of divorce, the Talaq has not taken place. Can you please confirm that what I have understood is correct. Please note I follow the Hanafi school of thought.