Rep. Thomas B. Evans Jr. (R-Del.) said yesterday he regrets "any association" he had with Playboy model Paula Parkinson and has "asked my family and the Lord to forgive me."

Evans, who was one of three congressmen who shared a house with Parkinson during a Florida golfing vacation last year, said, "It is clear to me that Mrs. Parkinson is a troubled person and I resent and regret that this woman is using my name in an effort to gain publicity for a possible book."

The 49-year-old father of three would not discuss the Florida trip, saying "this is a personal matter." He added that while "these stories have had a devastating effect on my family, I love my wife and family dearly, and we have never been closer."

The three-term congressman also said he has not considered either resigning, as suggested by his hometown newspaper, the Wilmington News-Journal, who broke the story about the trip, or stepping down as cheif bill manager in the House for the Reagan administration.

"I will continue to do everything I possibly can to see that President Reagan's comprehensive economic plan is passed," Evans said.

Evans, a former cochairman of the Republican National Committee said he "talked to the White House because I have many friends there," but said he got no help in drafting his statement. "This has nothing to do with the White House."

Parkinson, who was featured in a nude photograph in a Playboy article about "The Women of Washington," was a registered lobbyist, working against passage of a crop-insurance bill, at the time she stayed in the house with Evans, Rep. Tom Railsback (R-I.) and then-representative and now Sen. Dan Quayle (R-Ind.).

Evans reiterated his earlier statement that Parkinson did not influence his vote on the crop-insurance legislation. He voted against the bill (which passed anyway) not because of her, he said, but because it was "entirely consistent with my economic philosophy."