If it was only 3 months, they may have not gotten to any of those issues yet. They may have only gone on a few actual dates. So Ralph may not have been much of an issue except to prevent Tim from staying over and keeping dates to a minimum if babysitting services were not available. Both of which are perfectly good things, in my book.
When Waige get together, I wonder if they will even tell Ralph right away? Paige MUST realize how much Ralph wants it - and Walter certainly does - so they may want to keep it very quiet until they have a chance to really figure out if it will work.