Your first request is probably Gina Marie's Before There Was You, There Was You (http://www.midnightwhispers.ca/viewstory.php?sid=139).
In the story, Michael, Brian's "sister" Rena, and Mel all know that Lindsay is still in love with Brian. As wjsc99 said above, B/J decide to have a baby through surrogacy. The scene at the diner can be found in this chapter (http://www.midnightwhispers.ca/viewstory.php?sid=139&textsize=0&chapter=57). Brian, however, reveals that he and Justin are having the baby to Lindsay in a later scene.
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In the story, Michael, Brian's "sister" Rena, and Mel all know that Lindsay is still in love with Brian. As
Hope this helps!