So 24 m here. I just started seeing this girl (also 24, call her
Michelle). I couldn't be happier--we had immediate chemistry and we
both knew pretty quickly that we wanted to be with one another.
Problem is, I met her through one of her closest friends (call her
Dana) with whom I had and still have a very complicated relationship
with.

Dana and I met right after we had gotten out of long relationships.
There was a bit of a physical attraction, but neither one of us acted
on it not wanting to get attached. We spent a lot of time together and
basically filled the roles of boyfriend and girlfriend without the
physical intimacy or commitment.

One night, Dana invites Michelle over, she really wants us to meet.
Michelle and I spent most of the evening talking and realize we have a
lot in common. After this, Dana proclaims to Michelle that her
feelings for me are very complicated, and that seeing the chemistry
between us made her jealous. Dana forbids Michelle from speaking to
me.

Michelle and I don't speak for around 2 weeks or so. In the meantime,
Dana and I talk about the state of our friendship, and clear some
things up. She begins to see someone else, and we spend less time
together. Otherwise our friendship doesn't really change, and there is
no bad blood between us.

Finally I get in contact with Michelle to ask her a question. From
there things snowball; we talk for hours, we go out together, get to
know each other all without Dana's knowledge.

So now we're are together, and we're both dreading coming clean to
Dana about our relationship.  Michelle doesn't care about mine and Dana's complicated past, she is just happy we are together. 
We fear though that Dana may try to sabotage it, resent us, or make Michelle choose between her and I. 

Anyone been in a similar situation or have any suggestions for making
this easier on us?
user
met girl through friend, became close friends, she got jealous, cut contact with me, we came to realize, and
assistant
So 24 m here. I just started seeing this girl (also 24, call her
Michelle). I couldn't be happier--we had immediate chemistry and we
both knew pretty quickly that we wanted to be with one another.
Problem is, I met her through one of her closest friends (call her
Dana) with whom I had and still have a very complicated relationship
with.

Dana and I met right after we had gotten out of long relationships.
There was a bit of a physical attraction, but neither one of us acted
on it not wanting to get attached. We spent a lot of time together and
basically filled the roles of boyfriend and girlfriend without the
physical intimacy or commitment.

One night, Dana invites Michelle over, she really wants us to meet.
Michelle and I spent most of the evening talking and realize we have a
lot in common. After this, Dana proclaims to Michelle that her
feelings for me are very complicated, and that seeing the chemistry
between us made her jealous. Dana forbids Michelle from speaking to
me.

Michelle and I don't speak for around 2 weeks or so. In the meantime,
Dana and I talk about the state of our friendship, and clear some
things up. She begins to see someone else, and we spend less time
together. Otherwise our friendship doesn't really change, and there is
no bad blood between us.

Finally I get in contact with Michelle to ask her a question. From
there things snowball; we talk for hours, we go out together, get to
know each other all without Dana's knowledge.

So now we're are together, and we're both dreading coming clean to
Dana about our relationship.  Michelle doesn't care about mine and Dana's complicated past, she is just happy we are together. 
We fear though that Dana may try to sabotage it, resent us, or make Michelle choose between her and I. 

Anyone been in a similar situation or have any suggestions for making
this easier on us?
user
I'm seeing a girl through another girl, and we both like each other.
assistant