I'm presuming you are a US citizen? You can visit Canada for up to 6 months at a time if you are admissible, have proof he is supporting you, do not intend on working or studying, and satisfy the officer you leave Canada within the allotted time period he gives you.
You also may qualify for other immigration streams without the support of your partner. Depending on your profession and educational background, you may already have a profile for applying for Permanent Residency which will allow you live in Canada indefinitely.