Charles Howden, 64 and Fiona Stanley, 59 both from Newtongrange were killed when their Triumph Bonneville motorcycle collided with a white BMW car.
The accident happened on the A6094 at Rosewell at about 22:40 on Thursday.
In a statement, their families said they were "much loved by all those whose lives they touched".
They added: "Their kindness to others was legendary. They will long be remembered for the laughter they brought into our lives and the love they had for their friends, for their family and most of all the love they had for each other."
Officers are carrying out inquiries into the full circumstances surrounding the collision and have urged anyone with information to contact them.

On sale at Foston's Fine Meats in Duns are scotch eggs - with a chocolate twist.
For butcher Greg Foston has replaced the traditional hens' eggs with Cadbury's Creme Eggs.
He has wrapped the Easter treats with sweet chilli pork meat which, he claims, compliments the chocolate "perfectly".
It is the latest in a series of peculiar products created by Mr Foston.
He said a cracked black pepper and strawberry sausage produced to mark Wimbledon was a great success.
"We are always discussing new flavours and combinations and wanted to come up with some way of combining chocolate eggs into one of our products," he said.
"We did some experimenting with a plain pork sausage meat with the Creme Egg in the middle which we found was very tasty but needed something else.
"So we decided upon sweet chilli pork sausage meat around the egg and found it complimented the chocolate perfectly.
"The eggs are best eaten warmed up so the egg is melted in the middle."
He estimated that they contain about 300 calories.
Mr Foston added: "We are also concocting a pork sausage with whole Cadburys mini eggs actually inside the sausage."
Two bikers who died following a crash in Midlothian have been named by police.
[NEXT_CONCEPT]
A Borders butcher has created an "eggsperimental" delicacy to mark Easter.