Why was there tension between John And Elisabeth at the beginning of Act 2 In "The Crucible"?

In Act II the reader finds out that John Proctor has had an affair with Abigail while she worked for the Proctors. Elizabeth is still dealing with the hurt that John has caused her, and she is distant and cold towards him. The conversation between the two at dinner is strained. Proctor tries to draw Elizabeth into conversation, but she is not receptive. When the subject of the trials comes up, Elizabeth urges John to reveal to the court that Abigail confessed to him that it was all pretense. John, however, is reluctant, and Elizabeth becomes suspicious that he still has feelings for Abigail and rightly so. He explains that he may not be able to prove that she told him that because there were no witnesses. Upon hearing this Elizabeth becomes hurt and angry and accuses John of holding back the truth because of his feelings for Abigail.