I used this reason that we didn't get to go on honeymoon n would like my husband to visit Canada for 2 weeks so we could spend time together this in sep 2019 we applied for his visit visa online through gckey n husband was approved in 5 weeks for one year multiple entry visit visa n his spousal application is still in process since may 2019...we had to show a lot of proof though and we attached these docs:
Job verification letter from husband work, his property he owns from Pk, His travel history, he has lived in UK for over 5 years so that helped the most
Job verification letter from my work, my chequing and savings account from last 3 months with savings of 15,000$, detailed invitation letter, Eternity day to day plan for his 2 weeks stay (what we will do and places we will visit in my city)
We didn't book a return ticket or ticket reservation, Just took screenshots from Expedia of his travel dates and same thing for hotel booking we used screenshots and didn't reserve any bookings.
Now due to covid-19 not sure if cic will consider visiting spouse an essential reason so it might be hard to get visit visa but u can try I didn't think we will get approved but we did