Joy in seeing the other person. Warm comfort. Early in the relationship it is at the highest, partners sacrifice their own “usual” to align with their partners needs. However by the two year mark people have let their facade drop and they reveal more of their true self and what they need daily. This often feels like the love has faded, since your partner is expressing their needs and not just fulfilling your own. This either kills the relationship as people think they fell out of love and are now annoyed by their partner, or the partners take more of the “love is a choice” route and continue on, with communication and acceptance of partners quirks. Having open communication without blame helps this process. Then you both start building on a solid foundation of time, past support, trust and mutual caring. Here love is often not described as the heightened falling in love feeling, but something more calm and enduring.
Yes, but No, but. It’s like an always on self discovering VPN. No need to connect and login if you lose connection or change from WiFi to cell to Ethernet, it just figures it out. And as other commentor said it is wireguard. So you can set it up yourself without a 3rd party, just takes a little bit of tech savvy skill and trasfering some public keys between each set of connections. Tailscale just makes it effortless.