Wa `alaykum as-Salamu wa Rahmatullahi wa Barakatuh.
When a person returns to Allah by fulfilling all the requirements of a sincere repentance, he/she must be assured that Allah is going to accept his/her repentance. This is a part of retaining a good thought about Allah.
According to divine hadith, Allah said, “I am to my slave as he thinks of Me.” It means that Allah can do for his servant what he thinks He can do for him. One must also be assured of the protection and support He showers on His weak slaves.
The reason you always feel delighted when thinking about him is that Satan attempts to appeal him to you. This is one of defects of a sincere repentance. One of the requirements of a sincere repentance is that a person feels strong remorse and dislike of the sin he used to commit and gets a resolute determination that he will never do it again.
Allah Almighty knows best.
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