Keep moving forward. You dont have to explain buying new clothes. She has lost her right to that information. Are you contributing what you are suppose to? If so, dont let her guilt trip you.
My W did the same thing. Exactly she started getting jealous, saying things like, I know howbit feels now, referring to me as if I was meeting up with other women when I was GAL. I would dress nice, smell nice and look nice. I would say bye nice as he'll and then I would dip. I wouldn't call or text the whole time I would GAL. At first I was wondering if she was missing me. Than I started to focus more on the GAL. I would come back home and not say a word about my GAL and I kept moving forward with my life. I remember one time I asked my W to shave my back and her words were, "this is my last time im not shaving your back so another b$$!# can enjoy it". I just stood there like wow really. I didn't explain muself when she finished I said thanks and went to GAL.
M:37 W:37 T:11 M:10 S17, S13, S10, S4 BD:06/28/17 OM confirmed 07/20/17 Recon the M 10/29/17 Working hard:2gether
Onward and forward
This process is not a sprint it's a marathon! Patience, Patience, Patience.