Does he sound interested?

Hi all, I met this man through a professional trade he deals with house refurbs and has his own team of builders. He dealt with me most through normal messages/WhatsApp and the phone. The building work completed a week ago. He whatsapped me yesterday asking how I was etc then asked me to call him. I called him back he was having a general chit chat with me before I mentioned the building work and thanked him for all his workers had done. He then said ok courtesy call blah blah. He wouldn't put the phone down. Eventually we messaged in the evening and he said he likes my selfie. Previous to this he has sent winky emojis.