Be aware that the said antidepressant is an SSRI, which has the potential to cause permanent sexual dysfunction (PSSD) [1]. It seems that we don’t quite understand how the drug works. Most doctors threw this condition out of the window by claiming SD is caused by depression. There have been some recent studies showing possible mechanisms behind it. Some manufacturers and healthcare organisations (NHS) are beginning to label this as a potential side effect. But in general it’s not well known.
[1] https://rxisk.org/post-ssri-sexual-dysfunction-pssd/