Online Dating Blog

I reverted(he says new to Islam are always reverts not converts because we all are born Muslims) from Orthodox Christianity to Islam.
I was a very practicing Orthodox Christian, went to Church, prayed to Jesus, and believed in the Trinity.
So, I started dating a Muslim boy(same age as me) I met while ago, and we became together about 2 weeks ago. I really love him and he does too.
One day we started talking about religion and I was shocked to know he was so knowledgeable about not just his religion Islam, but also Christianity.
So we started detailing all the similarities of the two religions, and we were going great until we came to the subject of GOD. Obviously I brought up the Trinity and Jesus being our Savior, and that’s where his looks fell down. He sighed and then it started. The “Parting of the Ways between Islam and Christianity”.
We started arguing(lightly) for like 3 hours in the park, trying to explain each other the truth, but he got the advantage because he not only has memorized verses from the Holy Quran but also from the Bible.
I don’t know how and why but by the time he dropped me off home, I started questioning my faith. The way he explained to me the Divinity of God really shook me, and the way he broke down the Trinity shattered me. I never saw it the way he showed it to me, and I decided I had to do something. That night I started researching about the similarities and differences of the two religions and came across a Russian-version of the Holy Quran and started reading it. I don’t know why but I couldn’t stop and went well into the night around 3AM reading it online.
So and so happened, I got closer and closer to Islam and just recently I read the Shahada and have completed the process a few days ago in a Mosque; and he was crying while I said it in front of an Imam and so was I.
But now the real question arises, how do I tell my mother that I no longer am a Christian? My boyfriend is scared that I and my mother will fight because of this and is doing his best to aid me in this, for example, being there with me when I reveal the truth and everything; but I usually don’t get along with my mother, we barely see each other much during day and it’s gonna be hard. I live with my mother alone btw.
Help please? Muslims and Christians and any other helper welcome.
Please do not question my decision to reverting to Islam. I know I did the right thing. I felt it. I feel it. And I feel as if I am born new again, the world feels much more calm and peaceful since the moment I said the “Shahada” which is “La ilaha illa Allah wa-Muhammad rasul Allah.
There is no god but God and Muhammad is the prophet of God.”
Also, is it fine if as a Muslim teenager, I can continue wearing tight jeans and shirts but also wear head covering? Like not the burka, but completely cover my hair, face open and wear jeans? Like the Muslim females in this picture:

MuslimWomen