I am in my late 30s and 9 weeks pregnant.Not sure what to do,please advise but do not judge?

last year i met a man whom i worked with on a great project i set up through my work.We connected well and became good friends.We are both gifted professional people and share many common interests.At the time we were both going through separations,me from my long term partner and him from his wife but we didn't dwell on that,we were just enjoying a good platonic friendship.Then early this year we started to feel more that just friends and shared some special moments but not ual until 3 months went by because i didn't want to rush things and he supported that.Our connection was very deep and we both expressed that.We used contraception but he talked about wanting to have a family and a life with me.Said he admired and liked me a lot since the moment he saw me over 18 months ago and loved being with me.I felt great with him but was aware to take time and enjoy our friendship first and allow time to work.Then last month i found out i am pregnant despite using contraception.I already have a 12yrs old lovely daughter from my ex-marriage.She sees her dad often and is close to him too.I told my current partner about the pregnancy and his reaction was very supportive and said he is excited for us.The dilemma is that he still lives in a flat adjacent to his wife's house and is still involved with her and their 2 children who are 11 and 13.He said he has chosen to be so close because one of their children has a mental disability after an accident as a toddler and he wants to give support.He pleaded with me to keep this baby and promised consistent support but said it will be difficult to tell his wife.I now realize that they are still close and i am angry with him for concealing the truth.I did not believe nor disbelieve him but was going to take my time in the relationship,aware of the cirstances.I am in a dilemma because i do not wish nor would i choose to be a single mum with children from 2 fathers.On the other hand i cannot face the pain of the abortion and i know i can offer the baby a good environment.I am a professional but currently in between jobs and this worries me.I have very little family here and back home people would be very judgmental of these cirstances.I know they do not have this right but this is the reality and i cannot change them.In my heart i know that i will love this baby but i am scared my life will become lonely and i am scared to go through this alone.He said he will be there but we both know this pregnancy happened too soon.This may be my last chance for a baby but i also wished to have a family and i am concerned how will this child feel in life knowing the cirstances he/she was born in.I would be grateful to hear from someone who is a person born in a similar situation or has a child/baby from similar cirstances.This is so unexpected fro me and makes me feel despair at times.An abortion would free me but the trauma may remain with me forever.Thank you for any constructive advice or support.