أحسن الله إليكم شيخنا If one felt a love and attachment to images (for example a certain women, he is trying to repent), is this shirk because there isn't something that is loved in itself and for itself except Allah سبحانه وتعالى?

No, this is not shirk. Shirk in love is when a person loves something the way Allah is loved, giving it the veneration that belongs to Allah alone or putting its love above the love of Allah, as Shaykh Ibn Uthaymin explained. Do not fall into waswas.