I would suggest you to find out more about the affair before you make the decision. You should at least try to find out why your husband is attracted by the third party. (Of course, most of them will simply blame on the third party, as you may never have the chance to verify it. So don't be easily fooled.)
You husband treated you better than before may simply due to his guilty feeling. If the problem (i.e. the true reason behind the affair) is not properly addressed, another affair can be easily developed.
If the problem, say, is due to something that you cannot meet his expectation, can this be rectified in the future? If not, divorcing may be a better solution (assuming no children).
If your decision is to forgive, then you have to be prepared to have a "needle" in your heart for the rest of your life. As a matter of fact, the same "needle" will also reside in his heart. It will continue to hurt both of you again and again. Once decided to forgive him, you should be prepared for the consequences.
During the "cold war" with my ex-girlfriend some years ago, I found that she started to date another guy. She confessed to me after I found it out by accident. I tried to forgive her. It did not work out after a month or so. We separated. She did call me afterwards. I told her that it's not possible for me to endure such a "needle" in my heart for the rest of my life. ...
annlee,
我先生一年前開始在酒吧工作,他曾說過每晚都有不同的女仔想和他one night stand 或發展感情(我先生衰靚仔),但他都會表明自己已婚和不會做對不起老婆的事 ,叫我要對佢有信心,但份工做唔夠兩個月就比我發現到佢keep住好多同不同女仔的親密合照(面貼面攬腰錫面都有),你叫我點忍,加上我同佢返工時間完全顛倒(我返正常早班他返通宵更),好多時三四日先見到一次,我又發覺我意外有左第二個bb,心情真係極度之不穩定,加上我發現有幾個女仔經常send d好露骨的示愛sms比佢,佢又reply人地話 I love u 喎,我終於爆發同佢嘈話對佢失晒信心,點知佢話我守舊,呢d只不過係西化溝通方式喎! :evil: :evil: :evil: ok我信佢,但結果我臨生bb前發覺佢真係出面有個女人,我真係萬念俱灰,個女人係受過高深教育兼且知道佢已結婚生仔的!咩人黎架?所以話男人真係信唔過(尤其係靚仔,出面太多誘惑),而家好多女人真係明知人地有家庭都要去搶人老公的 :-結果如何過一兩天再談我老公返左黎