After an affair of 1 yr my hsv-2 titer is 3.9 and rising. my husband is negative and we were monogamous. did i receive hsv from my lover?

More info needed: It's often difficult to know when and from whom HSV2 was acquired. The numerical result of HSV2 antibody testing might indicate new infection, especially if it was quite low (e.g. under 2.0 rising to 3.9). But moderate changes in the number usually don't mean much. If a previous result was say 3.0, it's probably not a new infection and you might have been infected long before your affair.